Test devcontainer

.devcontainer/Dockerfile

@@ -2,9 +2,9 @@ ARG DEBIAN_VERSION=forky
 
 FROM debian:${DEBIAN_VERSION}-slim
 
-ARG CLANG_VERSION
-ARG CMAKE_VERSION
-ARG CPPCHECK_VERSION
+ARG CLANG_VERSION=21
+ARG CMAKE_VERSION=4.2.1
+ARG CPPCHECK_VERSION=2.18.0
 
 # install base packages
 

.devcontainer/devcontainer.json

@@ -1,12 +1,7 @@
 {
     "name": "C++ Devcontainer",
     "build": {
-        "dockerfile": "Dockerfile",
-        "args": {
-            "CLANG_VERSION": "21",
-            "CMAKE_VERSION": "4.2.1",
-            "CPPCHECK_VERSION": "2.18.0"
-        }
+        "dockerfile": "Dockerfile"
     },
     "remoteUser": "user"
 }

.github/workflows/sanity-checks.yaml

@@ -0,0 +1,84 @@
+name: Sanity Checks
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+env:
+  GHCR_URL_WITH_UPPERCASE: ghcr.io/${{ github.repository }}
+jobs:
+  build-devcontainer-image:
+    name: Build devcontainer
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+      - name: Convert GHCR url to lower case
+        run: echo "GHCR_URL=${GHCR_URL_WITH_UPPERCASE@L}" >> ${GITHUB_ENV}
+      - name: Login to Github Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Pre-build dev container image
+        uses: devcontainers/[email protected]
+        with:
+          imageName: ${{ env.GHCR_URL }}
+          cacheFrom: ${{ env.GHCR_URL }}
+          push: always
+  check-tools-installed:
+    name: Check if all tools are installed
+    needs: build-devcontainer-image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+      - name: Convert GHCR url to lower case
+        run: echo "GHCR_URL=${GHCR_URL_WITH_UPPERCASE@L}" >> ${GITHUB_ENV}
+      - name: Login to Github Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Check tools
+        uses: devcontainers/[email protected]
+        with:
+          cacheFrom: ${{ env.GHCR_URL }}
+          push: never
+          runCmd: |
+            clang --version
+            cmake --version
+            cppcheck --version
+            vcpkg --version
+  build-test-project:
+    name: Build test project
+    needs: build-devcontainer-image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+      - name: Convert GHCR url to lower case
+        run: echo "GHCR_URL=${GHCR_URL_WITH_UPPERCASE@L}" >> ${GITHUB_ENV}
+      - name: Login to Github Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build test project
+        uses: devcontainers/[email protected]
+        with:
+          cacheFrom: ${{ env.GHCR_URL }}
+          push: never
+          runCmd: |
+            cd test
+            cmake --preset clang-debug
+            cmake --build --preset clang-debug-build
+            ./build/clang-debug/hello_world

.gitignore

@@ -0,0 +1 @@
+build/

test/CMakeLists.txt

@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 4.2 FATAL_ERROR)
+
+# workaround clang bug
+set(CMAKE_CXX_STDLIB_MODULES_JSON "/usr/lib/llvm-21/lib/libc++.modules.json")
+
+set(CMAKE_EXPERIMENTAL_CXX_IMPORT_STD "d0edc3af-4c50-42ea-a356-e2862fe7a444")
+set(CMAKE_CXX_MODULE_STD ON)
+set(CMAKE_CXX_STANDARD 26)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+project(TestCppDevcontainer LANGUAGES CXX)
+
+add_executable(hello_world)
+target_sources(hello_world PRIVATE "main.cpp")

test/CMakePresets.json

@@ -0,0 +1,26 @@
+{
+    "version": 6,
+    "cmakeMinimumRequired": {
+        "major": 4,
+        "minor": 2,
+        "patch": 0
+    },
+    "configurePresets": [
+        {
+            "name": "clang-debug",
+            "generator": "Ninja",
+            "binaryDir": "${sourceDir}/build/${presetName}",
+            "cacheVariables": {
+                "CMAKE_CXX_COMPILER": "/usr/bin/clang++",
+                "CMAKE_CXX_FLAGS": "-stdlib=libc++",
+                "CMAKE_BUILD_TYPE": "Debug"
+            }
+        }
+    ],
+    "buildPresets": [
+        {
+            "name": "clang-debug-build",
+            "configurePreset": "clang-debug"
+        }
+    ]
+}

test/main.cpp

@@ -0,0 +1,6 @@
+import std;
+
+int main()
+{
+    std::println("Hello, world!");
+}