397 lines
17 KiB
Bash
397 lines
17 KiB
Bash
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#!/usr/bin/env bash
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#-------------------------------------------------------------------------------------------------------------
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# Copyright (c) Microsoft Corporation. All rights reserved.
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# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
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#-------------------------------------------------------------------------------------------------------------
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#
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# Docs: https://github.com/microsoft/vscode-dev-containers/blob/main/script-library/docs/docker-in-docker.md
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# Maintainer: The VS Code and Codespaces Teams
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#
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# Syntax: ./docker-in-docker-debian.sh [enable non-root docker access flag] [non-root user] [use moby] [Engine/CLI Version] [Major version for docker-compose]
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ENABLE_NONROOT_DOCKER=${1:-"true"}
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USERNAME=${2:-"automatic"}
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USE_MOBY=${3:-"true"}
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DOCKER_VERSION=${4:-"latest"} # The Docker/Moby Engine + CLI should match in version
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DOCKER_DASH_COMPOSE_VERSION=${5:-"v1"} # v1 or v2
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MICROSOFT_GPG_KEYS_URI="https://packages.microsoft.com/keys/microsoft.asc"
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DOCKER_MOBY_ARCHIVE_VERSION_CODENAMES="buster bullseye bionic focal jammy"
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DOCKER_LICENSED_ARCHIVE_VERSION_CODENAMES="buster bullseye bionic focal hirsute impish jammy"
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# Default: Exit on any failure.
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set -e
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# Setup STDERR.
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err() {
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echo "(!) $*" >&2
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}
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if [ "$(id -u)" -ne 0 ]; then
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err 'Script must be run as root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.'
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exit 1
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fi
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###################
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# Helper Functions
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# See: https://github.com/microsoft/vscode-dev-containers/blob/main/script-library/shared/utils.sh
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###################
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# Determine the appropriate non-root user
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if [ "${USERNAME}" = "auto" ] || [ "${USERNAME}" = "automatic" ]; then
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USERNAME=""
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POSSIBLE_USERS=("vscode" "node" "codespace" "$(awk -v val=1000 -F ":" '$3==val{print $1}' /etc/passwd)")
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for CURRENT_USER in ${POSSIBLE_USERS[@]}; do
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if id -u ${CURRENT_USER} > /dev/null 2>&1; then
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USERNAME=${CURRENT_USER}
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break
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fi
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done
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if [ "${USERNAME}" = "" ]; then
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USERNAME=root
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fi
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elif [ "${USERNAME}" = "none" ] || ! id -u ${USERNAME} > /dev/null 2>&1; then
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USERNAME=root
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fi
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# Get central common setting
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get_common_setting() {
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if [ "${common_settings_file_loaded}" != "true" ]; then
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curl -sfL "https://aka.ms/vscode-dev-containers/script-library/settings.env" 2>/dev/null -o /tmp/vsdc-settings.env || echo "Could not download settings file. Skipping."
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common_settings_file_loaded=true
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fi
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if [ -f "/tmp/vsdc-settings.env" ]; then
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local multi_line=""
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if [ "$2" = "true" ]; then multi_line="-z"; fi
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local result="$(grep ${multi_line} -oP "$1=\"?\K[^\"]+" /tmp/vsdc-settings.env | tr -d '\0')"
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if [ ! -z "${result}" ]; then declare -g $1="${result}"; fi
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fi
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echo "$1=${!1}"
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}
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# Function to run apt-get if needed
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apt_get_update_if_needed()
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{
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if [ ! -d "/var/lib/apt/lists" ] || [ "$(ls /var/lib/apt/lists/ | wc -l)" = "0" ]; then
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echo "Running apt-get update..."
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apt-get update
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else
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echo "Skipping apt-get update."
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fi
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}
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# Checks if packages are installed and installs them if not
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check_packages() {
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if ! dpkg -s "$@" > /dev/null 2>&1; then
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apt_get_update_if_needed
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apt-get -y install --no-install-recommends "$@"
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fi
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}
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# Figure out correct version of a three part version number is not passed
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find_version_from_git_tags() {
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local variable_name=$1
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local requested_version=${!variable_name}
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if [ "${requested_version}" = "none" ]; then return; fi
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local repository=$2
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local prefix=${3:-"tags/v"}
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local separator=${4:-"."}
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local last_part_optional=${5:-"false"}
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if [ "$(echo "${requested_version}" | grep -o "." | wc -l)" != "2" ]; then
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local escaped_separator=${separator//./\\.}
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local last_part
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if [ "${last_part_optional}" = "true" ]; then
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last_part="(${escaped_separator}[0-9]+)?"
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else
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last_part="${escaped_separator}[0-9]+"
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fi
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local regex="${prefix}\\K[0-9]+${escaped_separator}[0-9]+${last_part}$"
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local version_list="$(git ls-remote --tags ${repository} | grep -oP "${regex}" | tr -d ' ' | tr "${separator}" "." | sort -rV)"
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if [ "${requested_version}" = "latest" ] || [ "${requested_version}" = "current" ] || [ "${requested_version}" = "lts" ]; then
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declare -g ${variable_name}="$(echo "${version_list}" | head -n 1)"
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else
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set +e
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declare -g ${variable_name}="$(echo "${version_list}" | grep -E -m 1 "^${requested_version//./\\.}([\\.\\s]|$)")"
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set -e
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fi
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fi
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if [ -z "${!variable_name}" ] || ! echo "${version_list}" | grep "^${!variable_name//./\\.}$" > /dev/null 2>&1; then
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err "Invalid ${variable_name} value: ${requested_version}\nValid values:\n${version_list}" >&2
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exit 1
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fi
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echo "${variable_name}=${!variable_name}"
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}
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###########################################
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# Start docker-in-docker installation
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###########################################
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# Ensure apt is in non-interactive to avoid prompts
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export DEBIAN_FRONTEND=noninteractive
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# Source /etc/os-release to get OS info
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. /etc/os-release
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# Fetch host/container arch.
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architecture="$(dpkg --print-architecture)"
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# Check if distro is suppported
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if [ "${USE_MOBY}" = "true" ]; then
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# 'get_common_setting' allows attribute to be updated remotely
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get_common_setting DOCKER_MOBY_ARCHIVE_VERSION_CODENAMES
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if [[ "${DOCKER_MOBY_ARCHIVE_VERSION_CODENAMES}" != *"${VERSION_CODENAME}"* ]]; then
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err "Unsupported distribution version '${VERSION_CODENAME}'. To resolve, either: (1) set feature option '\"moby\": false' , or (2) choose a compatible OS distribution"
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err "Support distributions include: ${DOCKER_MOBY_ARCHIVE_VERSION_CODENAMES}"
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exit 1
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fi
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echo "Distro codename '${VERSION_CODENAME}' matched filter '${DOCKER_MOBY_ARCHIVE_VERSION_CODENAMES}'"
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else
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get_common_setting DOCKER_LICENSED_ARCHIVE_VERSION_CODENAMES
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if [[ "${DOCKER_LICENSED_ARCHIVE_VERSION_CODENAMES}" != *"${VERSION_CODENAME}"* ]]; then
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err "Unsupported distribution version '${VERSION_CODENAME}'. To resolve, please choose a compatible OS distribution"
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err "Support distributions include: ${DOCKER_LICENSED_ARCHIVE_VERSION_CODENAMES}"
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exit 1
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fi
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echo "Distro codename '${VERSION_CODENAME}' matched filter '${DOCKER_LICENSED_ARCHIVE_VERSION_CODENAMES}'"
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fi
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# Install dependencies
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check_packages apt-transport-https curl ca-certificates pigz iptables gnupg2 dirmngr
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if ! type git > /dev/null 2>&1; then
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apt_get_update_if_needed
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apt-get -y install git
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fi
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# Swap to legacy iptables for compatibility
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if type iptables-legacy > /dev/null 2>&1; then
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update-alternatives --set iptables /usr/sbin/iptables-legacy
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update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
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fi
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# Set up the necessary apt repos (either Microsoft's or Docker's)
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if [ "${USE_MOBY}" = "true" ]; then
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# Name of open source engine/cli
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engine_package_name="moby-engine"
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cli_package_name="moby-cli"
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# Import key safely and import Microsoft apt repo
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get_common_setting MICROSOFT_GPG_KEYS_URI
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curl -sSL ${MICROSOFT_GPG_KEYS_URI} | gpg --dearmor > /usr/share/keyrings/microsoft-archive-keyring.gpg
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echo "deb [arch=${architecture} signed-by=/usr/share/keyrings/microsoft-archive-keyring.gpg] https://packages.microsoft.com/repos/microsoft-${ID}-${VERSION_CODENAME}-prod ${VERSION_CODENAME} main" > /etc/apt/sources.list.d/microsoft.list
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else
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# Name of licensed engine/cli
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engine_package_name="docker-ce"
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cli_package_name="docker-ce-cli"
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# Import key safely and import Docker apt repo
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curl -fsSL https://download.docker.com/linux/${ID}/gpg | gpg --dearmor > /usr/share/keyrings/docker-archive-keyring.gpg
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echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/${ID} ${VERSION_CODENAME} stable" > /etc/apt/sources.list.d/docker.list
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fi
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# Refresh apt lists
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apt-get update
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# Soft version matching
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if [ "${DOCKER_VERSION}" = "latest" ] || [ "${DOCKER_VERSION}" = "lts" ] || [ "${DOCKER_VERSION}" = "stable" ]; then
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# Empty, meaning grab whatever "latest" is in apt repo
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engine_version_suffix=""
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cli_version_suffix=""
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else
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# Fetch a valid version from the apt-cache (eg: the Microsoft repo appends +azure, breakfix, etc...)
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docker_version_dot_escaped="${DOCKER_VERSION//./\\.}"
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docker_version_dot_plus_escaped="${docker_version_dot_escaped//+/\\+}"
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# Regex needs to handle debian package version number format: https://www.systutorials.com/docs/linux/man/5-deb-version/
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docker_version_regex="^(.+:)?${docker_version_dot_plus_escaped}([\\.\\+ ~:-]|$)"
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set +e # Don't exit if finding version fails - will handle gracefully
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cli_version_suffix="=$(apt-cache madison ${cli_package_name} | awk -F"|" '{print $2}' | sed -e 's/^[ \t]*//' | grep -E -m 1 "${docker_version_regex}")"
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engine_version_suffix="=$(apt-cache madison ${engine_package_name} | awk -F"|" '{print $2}' | sed -e 's/^[ \t]*//' | grep -E -m 1 "${docker_version_regex}")"
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set -e
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if [ -z "${engine_version_suffix}" ] || [ "${engine_version_suffix}" = "=" ] || [ -z "${cli_version_suffix}" ] || [ "${cli_version_suffix}" = "=" ] ; then
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err "No full or partial Docker / Moby version match found for \"${DOCKER_VERSION}\" on OS ${ID} ${VERSION_CODENAME} (${architecture}). Available versions:"
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apt-cache madison ${cli_package_name} | awk -F"|" '{print $2}' | grep -oP '^(.+:)?\K.+'
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exit 1
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fi
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echo "engine_version_suffix ${engine_version_suffix}"
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echo "cli_version_suffix ${cli_version_suffix}"
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fi
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# Install Docker / Moby CLI if not already installed
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if type docker > /dev/null 2>&1 && type dockerd > /dev/null 2>&1; then
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echo "Docker / Moby CLI and Engine already installed."
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else
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if [ "${USE_MOBY}" = "true" ]; then
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# Install engine
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set +e # Handle error gracefully
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apt-get -y install --no-install-recommends moby-cli${cli_version_suffix} moby-buildx moby-engine${engine_version_suffix}
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if [ $? -ne 0 ]; then
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err "Packages for moby not available in OS ${ID} ${VERSION_CODENAME} (${architecture}). To resolve, either: (1) set feature option '\"moby\": false' , or (2) choose a compatible OS version (eg: 'ubuntu-20.04')."
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exit 1
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fi
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set -e
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# Install compose
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apt-get -y install --no-install-recommends moby-compose || err "Package moby-compose (Docker Compose v2) not available for OS ${ID} ${VERSION_CODENAME} (${architecture}). Skipping."
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else
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apt-get -y install --no-install-recommends docker-ce-cli${cli_version_suffix} docker-ce${engine_version_suffix}
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fi
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fi
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echo "Finished installing docker / moby!"
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# Install Docker Compose if not already installed and is on a supported architecture
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if type docker-compose > /dev/null 2>&1; then
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echo "Docker Compose v1 already installed."
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else
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target_compose_arch="${architecture}"
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if [ "${target_compose_arch}" = "amd64" ]; then
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target_compose_arch="x86_64"
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fi
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if [ "${target_compose_arch}" != "x86_64" ]; then
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# Use pip to get a version that runs on this architecture
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if ! dpkg -s python3-minimal python3-pip libffi-dev python3-venv > /dev/null 2>&1; then
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apt_get_update_if_needed
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apt-get -y install python3-minimal python3-pip libffi-dev python3-venv
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fi
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export PIPX_HOME=/usr/local/pipx
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mkdir -p ${PIPX_HOME}
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export PIPX_BIN_DIR=/usr/local/bin
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export PYTHONUSERBASE=/tmp/pip-tmp
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export PIP_CACHE_DIR=/tmp/pip-tmp/cache
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pipx_bin=pipx
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if ! type pipx > /dev/null 2>&1; then
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pip3 install --disable-pip-version-check --no-cache-dir --user pipx
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pipx_bin=/tmp/pip-tmp/bin/pipx
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fi
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${pipx_bin} install --pip-args '--no-cache-dir --force-reinstall' docker-compose
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rm -rf /tmp/pip-tmp
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else
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compose_v1_version="1"
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find_version_from_git_tags compose_v1_version "https://github.com/docker/compose" "tags/"
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echo "(*) Installing docker-compose ${compose_v1_version}..."
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curl -fsSL "https://github.com/docker/compose/releases/download/${compose_v1_version}/docker-compose-Linux-x86_64" -o /usr/local/bin/docker-compose
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chmod +x /usr/local/bin/docker-compose
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fi
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fi
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# Install docker-compose switch if not already installed - https://github.com/docker/compose-switch#manual-installation
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current_v1_compose_path="$(which docker-compose)"
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target_v1_compose_path="$(dirname "${current_v1_compose_path}")/docker-compose-v1"
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if ! type compose-switch > /dev/null 2>&1; then
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echo "(*) Installing compose-switch..."
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compose_switch_version="latest"
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find_version_from_git_tags compose_switch_version "https://github.com/docker/compose-switch"
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curl -fsSL "https://github.com/docker/compose-switch/releases/download/v${compose_switch_version}/docker-compose-linux-${architecture}" -o /usr/local/bin/compose-switch
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chmod +x /usr/local/bin/compose-switch
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# TODO: Verify checksum once available: https://github.com/docker/compose-switch/issues/11
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# Setup v1 CLI as alternative in addition to compose-switch (which maps to v2)
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mv "${current_v1_compose_path}" "${target_v1_compose_path}"
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update-alternatives --install /usr/local/bin/docker-compose docker-compose /usr/local/bin/compose-switch 99
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update-alternatives --install /usr/local/bin/docker-compose docker-compose "${target_v1_compose_path}" 1
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fi
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if [ "${DOCKER_DASH_COMPOSE_VERSION}" = "v1" ]; then
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update-alternatives --set docker-compose "${target_v1_compose_path}"
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else
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update-alternatives --set docker-compose /usr/local/bin/compose-switch
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fi
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# If init file already exists, exit
|
||
|
|
if [ -f "/usr/local/share/docker-init.sh" ]; then
|
||
|
|
echo "/usr/local/share/docker-init.sh already exists, so exiting."
|
||
|
|
exit 0
|
||
|
|
fi
|
||
|
|
echo "docker-init doesnt exist, adding..."
|
||
|
|
|
||
|
|
# Add user to the docker group
|
||
|
|
if [ "${ENABLE_NONROOT_DOCKER}" = "true" ]; then
|
||
|
|
if ! getent group docker > /dev/null 2>&1; then
|
||
|
|
groupadd docker
|
||
|
|
fi
|
||
|
|
|
||
|
|
usermod -aG docker ${USERNAME}
|
||
|
|
fi
|
||
|
|
|
||
|
|
tee /usr/local/share/docker-init.sh > /dev/null \
|
||
|
|
<< 'EOF'
|
||
|
|
#!/bin/sh
|
||
|
|
#-------------------------------------------------------------------------------------------------------------
|
||
|
|
# Copyright (c) Microsoft Corporation. All rights reserved.
|
||
|
|
# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
|
||
|
|
#-------------------------------------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
set -e
|
||
|
|
|
||
|
|
dockerd_start="$(cat << 'INNEREOF'
|
||
|
|
# explicitly remove dockerd and containerd PID file to ensure that it can start properly if it was stopped uncleanly
|
||
|
|
# ie: docker kill <ID>
|
||
|
|
find /run /var/run -iname 'docker*.pid' -delete || :
|
||
|
|
find /run /var/run -iname 'container*.pid' -delete || :
|
||
|
|
|
||
|
|
## Dind wrapper script from docker team, adapted to a function
|
||
|
|
# Maintained: https://github.com/moby/moby/blob/master/hack/dind
|
||
|
|
|
||
|
|
export container=docker
|
||
|
|
|
||
|
|
if [ -d /sys/kernel/security ] && ! mountpoint -q /sys/kernel/security; then
|
||
|
|
mount -t securityfs none /sys/kernel/security || {
|
||
|
|
echo >&2 'Could not mount /sys/kernel/security.'
|
||
|
|
echo >&2 'AppArmor detection and --privileged mode might break.'
|
||
|
|
}
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Mount /tmp (conditionally)
|
||
|
|
if ! mountpoint -q /tmp; then
|
||
|
|
mount -t tmpfs none /tmp
|
||
|
|
fi
|
||
|
|
|
||
|
|
# cgroup v2: enable nesting
|
||
|
|
if [ -f /sys/fs/cgroup/cgroup.controllers ]; then
|
||
|
|
# move the processes from the root group to the /init group,
|
||
|
|
# otherwise writing subtree_control fails with EBUSY.
|
||
|
|
# An error during moving non-existent process (i.e., "cat") is ignored.
|
||
|
|
mkdir -p /sys/fs/cgroup/init
|
||
|
|
xargs -rn1 < /sys/fs/cgroup/cgroup.procs > /sys/fs/cgroup/init/cgroup.procs || :
|
||
|
|
# enable controllers
|
||
|
|
sed -e 's/ / +/g' -e 's/^/+/' < /sys/fs/cgroup/cgroup.controllers \
|
||
|
|
> /sys/fs/cgroup/cgroup.subtree_control
|
||
|
|
fi
|
||
|
|
## Dind wrapper over.
|
||
|
|
|
||
|
|
# Handle DNS
|
||
|
|
set +e
|
||
|
|
cat /etc/resolv.conf | grep -i 'internal.cloudapp.net'
|
||
|
|
if [ $? -eq 0 ]
|
||
|
|
then
|
||
|
|
echo "Setting dockerd Azure DNS."
|
||
|
|
CUSTOMDNS="--dns 168.63.129.16"
|
||
|
|
else
|
||
|
|
echo "Not setting dockerd DNS manually."
|
||
|
|
CUSTOMDNS=""
|
||
|
|
fi
|
||
|
|
set -e
|
||
|
|
|
||
|
|
# Start docker/moby engine
|
||
|
|
( dockerd $CUSTOMDNS > /tmp/dockerd.log 2>&1 ) &
|
||
|
|
INNEREOF
|
||
|
|
)"
|
||
|
|
|
||
|
|
# Start using sudo if not invoked as root
|
||
|
|
if [ "$(id -u)" -ne 0 ]; then
|
||
|
|
sudo /bin/sh -c "${dockerd_start}"
|
||
|
|
else
|
||
|
|
eval "${dockerd_start}"
|
||
|
|
fi
|
||
|
|
|
||
|
|
set +e
|
||
|
|
|
||
|
|
# Execute whatever commands were passed in (if any). This allows us
|
||
|
|
# to set this script to ENTRYPOINT while still executing the default CMD.
|
||
|
|
exec "$@"
|
||
|
|
EOF
|
||
|
|
|
||
|
|
chmod +x /usr/local/share/docker-init.sh
|
||
|
|
chown ${USERNAME}:root /usr/local/share/docker-init.sh
|
||
|
|
|
||
|
|
echo 'docker-in-docker-debian script has completed!'
|