CI: Use Docker for CI

.dockerignore

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+# Build directory
+
+builddir/
+
+# Irrelevant files
+
+.github/
+.clang-format
+.gitignore
+LICENSE
+*/*/*.md
+
+# Dockerfiles
+
+*/*/*Dockerfile
+*/*/*Dockerfile.in

.github/workflows/test.yml

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+name: Test
+
+on:
+  # Triggers the workflow on push or pull request events but only for the main branch
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        cfg:
+          - { id: ubuntu-gcc, platform: ubuntu, cc: gcc, cpp: g++, setup_options: ""}
+          - { id: ubuntu-gcc-sanitize, platform: ubuntu, cc: gcc, cpp: g++, setup_options: "-Db_sanitize=address,undefined"}
+          - { id: ubuntu-clang, platform: ubuntu, cc: clang, cpp: clang++, setup_options: ""}
+          - { id: rockylinux-gcc, platform: ubuntu, cc: gcc, cpp: g++, setup_options: ""}
+          - { id: rockylinux-gcc-sanitize, platform: ubuntu, cc: gcc, cpp: g++, setup_options: "-Db_sanitize=address,undefined"}
+          - { id: rockylinux-clang, platform: ubuntu, cc: clang, cpp: clang++, setup_options: ""}
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: false
+          load: true
+          tags: ${{ matrix.cfg.id }}
+          file: tests/docker/${{ matrix.cfg.platform }}.Dockerfile
+          build-args: |
+            cc=${{ matrix.cfg.cc }}
+            cxx=${{ matrix.cfg.cpp }}
+            setup_options=${{ matrix.cfg.setup_options }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+      - name: Run tests
+        run: |
+          docker run ${{ matrix.cfg.id }} ninja -C builddir test

tests/docker/rockylinux.Dockerfile

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+FROM rockylinux:9
+
+# Enable EPEL
+RUN dnf update -y
+RUN dnf install -y 'dnf-command(config-manager)'
+RUN dnf config-manager --set-enabled crb -y
+RUN dnf install epel-release -y
+
+# Install dependencies
+RUN dnf install -y \
+        python3.11 \
+        python3-pip \
+        ccache \
+        clang \
+        g++ \
+        ninja-build \
+        cmake \
+        jsoncpp-devel \
+        expected-devel \
+        gtest-devel \
+        fmt-devel \
+        cxxopts-devel
+RUN dnf clean all
+RUN update-alternatives --install /usr/local/bin/python python /usr/bin/python3.11 10
+# Install meson from pip
+RUN python3 -m pip install -U meson
+
+# Copy code
+WORKDIR /workarea
+COPY ./ ./
+
+ARG cc=gcc
+ARG cxx=g++
+ARG setup_options=
+
+# Build cps-config and tests
+ENV CC="ccache $cc" CXX="ccache $cxx"
+ENV CCACHE_DIR=/ccache
+RUN meson setup builddir $setup_options
+RUN --mount=type=cache,target=/ccache/ ninja -C builddir

tests/docker/ubuntu.Dockerfile

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+FROM ubuntu:22.04
+
+# Install dependencies
+RUN apt-get update
+RUN apt-get install -y \
+        python3.11 \
+        python3-pip \
+        ccache \
+        clang \
+        g++ \
+        ninja-build \
+        cmake \
+        libjsoncpp-dev \
+        libexpected-dev \
+        libgtest-dev \
+        libfmt-dev \
+        libcxxopts-dev
+RUN apt-get clean
+RUN update-alternatives --install /usr/local/bin/python python /usr/bin/python3.11 10
+# Install meson from pip
+RUN python3 -m pip install -U meson
+
+# Copy code
+WORKDIR /workarea
+COPY ./ ./
+
+ARG cc=gcc
+ARG cxx=g++
+ARG setup_options=
+
+# Build cps-config and tests
+ENV CC="ccache $cc" CXX="ccache $cxx"
+ENV CCACHE_DIR=/ccache
+RUN meson setup builddir $setup_options
+RUN --mount=type=cache,target=/ccache/ ninja -C builddir