[workflows] Build a container for running CI on github actions (llvm#…

…75286)

Using a container will allow us to have similar testing environments on
both the GitHub hosted runners and the self-hosted runners.

.github/workflows/build-ci-container.yml

@@ -0,0 +1,60 @@
+
+name: Build CI Container
+
+permissions:
+ contents: read
+
+on:
+ push:
+ branches:
+ - main
+ paths:
+ - .github/workflows/build-ci-container.yml
+ - '.github/workflows/containers/github-action-ci/**'
+ pull_request:
+ branches:
+ - main
+ paths:
+ - .github/workflows/build-ci-container.yml
+ - '.github/workflows/containers/github-action-ci/**'
+
+jobs:
+ build-ci-container:
+ if: github.repository_owner == 'llvm'
+ runs-on: ubuntu-latest
+ permissions:
+ packages: write
+ steps:
+ - name: Write Variables
+ id: vars
+ run: |
+ tag=`date +%s`
+ container_name="ghcr.io/$GITHUB_REPOSITORY_OWNER/ci-ubuntu-22.04"
+ echo "container-name=$container_name" >> $GITHUB_OUTPUT
+ echo "container-name-tag=$container_name:$tag" >> $GITHUB_OUTPUT
+
+ - name: Checkout LLVM
+ uses: actions/checkout@v4
+ with:
+ sparse-checkout: .github/workflows/containers/github-action-ci/
+
+ - name: Build Container
+ working-directory: ./.github/workflows/containers/github-action-ci/
+ run: |
+ podman build -t ${{ steps.vars.outputs.container-name-tag }} .
+ podman tag ${{ steps.vars.outputs.container-name-tag }} ${{ steps.vars.outputs.container-name }}:latest
+
+ - name: Test Container
+ run: |
+ for image in ${{ steps.vars.outputs.container-name-tag }} ${{ steps.vars.outputs.container-name }}; do
+ podman run --rm -it $image /usr/bin/bash -x -c 'printf '\''#include <iostream>\nint main(int argc, char **argv) { std::cout << "Hello\\n"; }'\'' | clang++ -x c++ - && ./a.out | grep Hello'
+ done
+
+ - name: Push Container
+ if: github.event_name == 'push'
+ env:
+ GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+ run: |
+ podman login -u ${{ github.actor }} -p $GITHUB_TOKEN ghcr.io
+ podman push ${{ steps.vars.outputs.container-name-tag }}
+ podman push ${{ steps.vars.outputs.container-name }}:latest

.github/workflows/containers/github-action-ci/Dockerfile

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+FROM docker.io/library/ubuntu:22.04 as base
+ENV LLVM_SYSROOT=/opt/llvm/
+
+FROM base as toolchain
+ENV LLVM_MAJOR=17
+ENV LLVM_VERSION=${LLVM_MAJOR}.0.6
+ENV LLVM_DIRNAME=clang+llvm-${LLVM_VERSION}-x86_64-linux-gnu-ubuntu-22.04
+ENV LLVM_FILENAME=${LLVM_DIRNAME}.tar.xz
+
+RUN apt-get update && \
+ apt-get install -y \
+ curl \
+ xz-utils
+
+RUN mkdir -p $LLVM_SYSROOT/bin/ $LLVM_SYSROOT/lib/
+
+RUN curl -O -L https://github.com/llvm/llvm-project/releases/download/llvmorg-$LLVM_VERSION/$LLVM_FILENAME
+
+RUN tar -C $LLVM_SYSROOT --strip-components=1 -xJf $LLVM_FILENAME \
+ $LLVM_DIRNAME/bin/clang \
+ $LLVM_DIRNAME/bin/clang++ \
+ $LLVM_DIRNAME/bin/clang-cl \
+ $LLVM_DIRNAME/bin/clang-$LLVM_MAJOR \
+ $LLVM_DIRNAME/bin/lld \
+ $LLVM_DIRNAME/bin/ld.lld \
+ $LLVM_DIRNAME/lib/clang/
+
+
+FROM base
+
+COPY --from=toolchain $LLVM_SYSROOT $LLVM_SYSROOT
+
+# Need to install curl for hendrikmuhs/ccache-action
+# Need nodejs for some of the GitHub actions.
+# Need perl-modules for clang analyzer tests.
+RUN apt-get update && \
+ apt-get install -y \
+ binutils \
+ cmake \
+ curl \
+ libstdc++-11-dev \
+ ninja-build \
+ nodejs \
+ perl-modules \
+ python3-psutil
+
+ENV LLVM_SYSROOT=$LLVM_SYSROOT
+ENV PATH=${LLVM_SYSROOT}/bin:${PATH}