diff --git a/README.md b/README.md index 0edecc7..48d1b99 100644 --- a/README.md +++ b/README.md @@ -1,4 +1,20 @@ -# features +# Development Container Features + + + + +
devcontainers organization logo +Development Container 'Features'
+A set of simple and reusable 'features'. Quickly add a language/tool/CLI to a development container. +
+ +'Features' are self-contained units of installation code and development container configuration. Features are designed to install atop a wide-range of base container images (**this repo focuses on `debian` based images**). + +Missing a CLI or language in your otherwise _perfect_ container image? Add the relevant 'feature' to the `features` property of a [`devcontainer.json`](https://containers.dev/implementors/json_reference/#general-properties). + +The [`devcontainer` CLI](https://github.com/devcontainers/cli), implemented by the VS Code Remote-Containers extension and Github Codespaces, is required to process a `devcontainer.json` and build a container images declaring 'features'. + +Development container 'features' are a [proposed](https://github.com/devcontainers/spec/blob/main/proposals/devcontainer-features.md) addition to the [development container specification](https://github.com/devcontainers/spec/blob/main/proposals/devcontainer-features.md). **Please note that 'features' are in preview and subject to breaking changes**. ## Repo Structure @@ -7,7 +23,6 @@ ├── lib │ └── utils.sh ├── README.md -├── settings.env ├── src │ ├── dotnet │ │ ├── feature.json @@ -15,9 +30,65 @@ │ ├── go │ │ ├── feature.json │ │ └── install.sh +| ├── ... +│ │ ├── feature.json +│ │ └── install.sh ├── test │ ├── dotnet │ │ └── test.sh │ └── go -│ └── test.sh +│ | └── test.sh +| ├── ... +│ │ ├── feature.json +│ │ └── install.sh +├── test-scenarios +│ ├── install_jupyterlab.sh +│ ├── install_python_twice.sh +| ├── ... +│ └── scenarios.json ``` + +- [`lib`](lib) - A collection of tools, scripts, and shared configuration used generally by this repo's features. +- [`src`](src) - A collection of subfolders, each declaring a feature. Each subfolder contains at least a `feature.json` and the appropriately declared install script. +- [`test`](test) - Mirroring `src`, a folder-per-feature with at least a `test.sh` script. The [`devcontainer` CLI](https://github.com/devcontainers/cli) will execute tests [of this form](https://github.com/devcontainers/features/blob/main/.github/workflows/test-all.yaml). +- [`test-scenarios`](test-scenarios) - More complex scenarios involving a set of features from this repo. [`devcontainer` CLI](https://github.com/devcontainers/cli) will execute tests [of this form](https://github.com/devcontainers/features/blob/main/.github/workflows/test-scenarios.yaml). + +## Usage + +To reference a feature from this repository, add the desired features to a `devcontainer.json`. + +The example below installs the `go` and `docker-in-docker` declared in the [`./src`](./src) directory of this repository. + +See the relevant feature's README for supported options. + +```jsonc +"image": "mcr.microsoft.com/devcontainers/base:ubuntu", // Any generic, debian-based image. +features: { + "devcontainers/features/go@latest": { + "version": "1.18" + }, + "devcontainers/features/docker-in-docker@latest": { + "version": "latest", + "moby": true + } +} +``` + +The `@latest` version annotation is added implicitly if omitted. To pin to a specific [release tag](https://github.com/devcontainers/features/releases), append it to the end of the feature. + +```jsonc +features: { + "devcontainers/features/go@v0.0.2": { + "version": "1.18" + }, +``` + +## Contributions + +### Contibuting to this repository + +This repository will accept improvement and bug fix contributions related to the [current set of maintained features](./src). + +### Creating your own collection of features + +_More information your creating own set of features will be posted soon._ diff --git a/settings.env b/lib/settings.env similarity index 100% rename from settings.env rename to lib/settings.env