adds stress test workflow

.github/workflows/docker-in-docker-stress-test.yaml

@@ -0,0 +1,39 @@
+name: "Stress test - Docker in Docker"
+on:
+  pull_request:
+    paths:
+      - 'src/docker-in-docker/**'
+  workflow_dispatch:
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        test-pass: [ 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50 ]
+      fail-fast: false
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: "Install latest devcontainer CLI"
+        run: npm install -g @devcontainers/cli
+
+      - name: "Generating tests for 'docker-in-docker' which validates if docker daemon is running"
+        run: devcontainer features test --skip-scenarios -f docker-in-docker -i mcr.microsoft.com/devcontainers/base:ubuntu .
+
+  test-onCreate:
+    strategy:
+      matrix:
+        test-pass: [ 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50 ]
+      fail-fast: false
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: "Install latest devcontainer CLI"
+        run: npm install -g @devcontainers/cli
+
+      - name: "Generating tests for 'docker-in-docker' which validates if docker daemon is available within 'onCreateCommand'"
+        run: devcontainer features test -f docker-in-docker --skip-autogenerated --filter "docker_with_on_create_command"

test/docker-in-docker/docker_with_on_create_command.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# Feature specific tests
+check "version" docker  --version
+check "docker-ps" bash -c "docker ps"
+
+check "docker-init-exists" bash -c "ls /usr/local/share/docker-init.sh"
+check "log-exists" bash -c "ls /tmp/dockerd.log"
+check "log-for-completion" bash -c "cat /tmp/dockerd.log | grep 'Daemon has completed initialization'"
+check "log-contents" bash -c "cat /tmp/dockerd.log | grep 'API listen on /var/run/docker.sock'"
+
+# Report result
+reportResults

test/docker-in-docker/scenarios.json

@@ -67,5 +67,14 @@
             }
         },
         "remoteUser": "node"
+    },
+    // DO NOT REMOVE: This scenario is used by the docker-in-docker-stress-test workflow
+    "docker_with_on_create_command": {
+        "image": "mcr.microsoft.com/devcontainers/base:debian",
+        "features": {
+            "docker-in-docker": {}
+        },
+        "remoteUser": "vscode",
+        "onCreateCommand": "docker ps"
     }
 }

test/docker-in-docker/test.sh

@@ -8,10 +8,10 @@ source dev-container-features-test-lib
 # Feature specific tests
 check "version" docker  --version
 check "docker-init-exists" bash -c "ls /usr/local/share/docker-init.sh"
+check "docker-ps" bash -c "docker ps"
 check "log-exists" bash -c "ls /tmp/dockerd.log"
 check "log-for-completion" bash -c "cat /tmp/dockerd.log | grep 'Daemon has completed initialization'"
 check "log-contents" bash -c "cat /tmp/dockerd.log | grep 'API listen on /var/run/docker.sock'"
-check "docker-ps" bash -c "docker ps"
 
 # Report result
 reportResults