Add runtime test

src/dotnet/install.sh

@@ -55,7 +55,7 @@ install_version() {
 
     if [ "$DOTNET_RUNTIME_ONLY" = 'true' ]; then
         echo "Installing runtime only..."
-        runtime_arg = '--runtime dotnet'
+        runtime_arg='--runtime dotnet'
     fi
 
     "$DOTNET_INSTALL_SCRIPT" \

test/dotnet/install_dotnet_runtime.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# some runtime installed
+check "runtime" bash -c 'test "$(dotnet --list-runtimes | wc -l)" -gt 0'
+
+# no sdk installed
+check "no sdk" bash -c 'test "$(dotnet --list-sdks | wc -l)" -eq 0'
+
+# Report result
+reportResults

test/dotnet/scenarios.json

@@ -47,5 +47,14 @@
                 "version": "7"
             }
         }
+    },
+    "install_dotnet_runtime": {
+        "image": "ubuntu:jammy",
+        "features": {
+            "dotnet": {
+                "version": "6.0.14",
+                "runtimeOnly": true
+            }
+        }
     }
 }