fixed cmake for lunar

- changed to install via script
- aligned Dockerfile
- added github workflow for building devcontainer

.devcontainer/Dockerfile

@@ -4,6 +4,8 @@ FROM ubuntu:${VARIANT}
 
 # Restate the variant to use it later on in the llvm and cmake installations
 ARG VARIANT
+ARG CMAKE_VERSION=3.28.3
+ENV PATH="${PATH}:/cmake-${CMAKE_VERSION}-linux-x86_64/bin/:"
 
 # Install necessary packages available from standard repos
 RUN apt-get update -qq && export DEBIAN_FRONTEND=noninteractive && \
@@ -29,7 +31,7 @@ ENV CONAN_SYSREQUIRES_SUDO 0
 ENV CONAN_SYSREQUIRES_MODE enabled
 
 # User-settable versions:
-# This Dockerfile should support gcc-[10, 11, 12] and clang-[10, 11, 12, 13, 14, 15]
+# This Dockerfile should support gcc-[10, 11, 12, 13] and clang-[10, 11, 12, 13, 14, 15, 16, 17]
 # Earlier versions of clang will require significant modifications to the IWYU section
 ARG GCC_VER="12"
 # Add gcc-${GCC_VER}
@@ -42,7 +44,7 @@ RUN add-apt-repository -y ppa:ubuntu-toolchain-r/test && \
 RUN update-alternatives --install /usr/bin/gcc gcc $(which gcc-${GCC_VER}) 100
 RUN update-alternatives --install /usr/bin/g++ g++ $(which g++-${GCC_VER}) 100
 
-ARG LLVM_VER="15"
+ARG LLVM_VER="17"
 # Add clang-${LLVM_VER}
 ARG LLVM_URL="http://apt.llvm.org/${VARIANT}/"
 ARG LLVM_PKG="llvm-toolchain-${VARIANT}-${LLVM_VER}"
@@ -60,15 +62,11 @@ RUN update-alternatives --install /usr/bin/clang-tidy clang-tidy $(which clang-t
 RUN update-alternatives --install /usr/bin/clang clang $(which clang-${LLVM_VER}) 100
 RUN update-alternatives --install /usr/bin/clang++ clang++ $(which clang++-${LLVM_VER}) 100
 
-# Add current cmake/ccmake, from Kitware
-ARG CMAKE_URL="https://apt.kitware.com/ubuntu/"
-# FALLBACK because lunar isn't support yet by kitware
-ARG CMAKE_PKG=${VARIANT}
-RUN wget -O - https://apt.kitware.com/keys/kitware-archive-latest.asc 2>/dev/null \
-        | gpg --dearmor - | tee /etc/apt/trusted.gpg.d/kitware.gpg >/dev/null && \
-    apt-add-repository -y "deb ${CMAKE_URL} ${CMAKE_PKG} main" && \
-    apt-get update -qq && export DEBIAN_FRONTEND=noninteractive && \
-    apt-get install -y --no-install-recommends cmake cmake-curses-gui
+# Add install cmake/ccmake
+RUN wget https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-linux-x86_64.sh  \
+    && chmod +x cmake-${CMAKE_VERSION}-linux-x86_64.sh  \
+    && ./cmake-${CMAKE_VERSION}-linux-x86_64.sh --include-subdir --skip-license \
+    && rm cmake-${CMAKE_VERSION}-linux-x86_64.sh
 
 # Install editors
 RUN apt-get update -qq && export DEBIAN_FRONTEND=noninteractive && \

.devcontainer/devcontainer.json

@@ -6,7 +6,7 @@
     "dockerfile": "Dockerfile",
     // Update 'VARIANT' to pick an Ubuntu OS version. Options: [focal, jammy, lunar]. Default: lunar
     // Update 'GCC_VER' to pick a gcc and g++ version. Options: [10, 11, 12, 13]. Default: 12
-    // Update 'LLVM_VER' to pick clang version. Options: [10, 11, 12, 13, 14, 15]. Default: 15
+    // Update 'LLVM_VER' to pick clang version. Options: [10, 11, 12, 13, 14, 15, 16, 17]. Default: 17
     // Update 'USE_CLANG' to set clang as the default C and C++ compiler. Options: [1, null]. Default null
     // "args": {
     // 	"VARIANT": "focal",
@@ -25,7 +25,7 @@
     "editor.formatOnSave": true
   },
   // Add the IDs of extensions you want installed when the container is created.
-  "extensions": [
+  "customizations/vscode/extensions": [
     "ms-vscode.cpptools",
     "ms-vscode.cmake-tools",
     "twxs.cmake",

.github/workflows/build_cmake.yml

@@ -26,6 +26,10 @@ jobs:
         shell: bash
         run: cd docker && ./build-dev-image.sh
 
+      - name: Build .devcontainer docker image
+        shell: bash
+        run: cd .devcontainer && DOCKER_BUILDKIT=1 docker build -t devcontainer:latest .
+
   linux:
     name: ${{ matrix.os }}, ${{ matrix.compiler.name }}, C++${{ matrix.cxx }}, ${{ matrix.buildtype }}
     runs-on: ${{ matrix.os }}

docker/Dockerfile

@@ -5,9 +5,9 @@
 FROM ubuntu:23.04 as cpp-docker-common
 
 ARG DEBIAN_FRONTEND=noninteractive
-ARG CLANG_COMPILER_VERSION=15
-ARG CMAKE_VERSION=3.26.3
-ENV PATH="${PATH}:/cmake-3.26.3-linux-x86_64/bin/:"
+ARG CLANG_COMPILER_VERSION=17
+ARG CMAKE_VERSION=3.28.3
+ENV PATH="${PATH}:/cmake-${CMAKE_VERSION}-linux-x86_64/bin/:"
 
 RUN apt-get update && apt-get -y dist-upgrade && apt-get -y install --fix-missing \
   binutils \