ci: run checks in CI

.github/workflows/check.yaml

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+name: Check
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/${{ github.repository }}-builder:ci_pr
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - name: Build ouichefs
+        run: make -C /usr/src/linux-6.5.7/ M=$PWD
+
+      - name: Prepare disk image
+        run: make -C mkfs/ img IMG=a.img
+
+      - name: Cache built module
+        uses: actions/cache/save@v4
+        with:
+          path: ./
+          key: ${{ github.sha }}
+
+  check:
+    needs: build
+    runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/${{ github.repository }}-builder:ci-pr
+    strategy:
+      matrix:
+        checks: [ouichefs_basic_behavior, ouichefs_fio]
+    timeout-minutes: 10
+    steps:
+      - name: Restore built module
+        uses: actions/cache/restore@v4
+        with:
+          key: ${{ github.sha }}
+          path: ./
+
+      - name: Prepare images
+        run: cp mkfs/a.img mkfs/b.img
+
+      - name: Check ${{ matrix.checks }}...
+        run: >
+          vng
+          --verbose
+          --run=/usr/src/linux-6.5.7
+          --qemu-opts='-drive file=mkfs/a.img,format=raw,if=virtio'
+          --qemu-opts='-drive file=mkfs/b.img,format=raw,if=virtio'
+          --exec='make -C /lib/modules/\`uname -r\`/build M=$PWD modules_install
+          && source ./evaluation.sh
+          && check_${{ matrix.checks }}'

.github/workflows/container.yaml

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+name: Create and publish a Docker image
+
+on:
+  push:
+    paths:
+      - "Dockerfile"
+
+env:
+  REGISTRY: ghcr.io
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ github.repository }}-builder
+
+      - name: Build and push Docker image
+        id: push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

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+# The virtme-ng present in the latest LTS at the time of writing has a bug that causes
+# the VM to shutdown unexpectedly.
+FROM ubuntu:25.04
+
+# deb-src repositories are required for `apt-get build-dep`.
+RUN sed -i 's/Types: deb/Types: deb deb-src/g' /etc/apt/sources.list.d/ubuntu.sources
+
+# iproute2, kbd and udev are required by virtme-ng
+# nodejs is needed for the GitHub Actions cache scripts
+RUN apt-get update && \
+    DEBIAN_FRONTEND=noninteractive apt-get install -y virtme-ng iproute2 kbd udev fio nodejs && \
+    apt-get build-dep -y --no-install-recommends linux
+WORKDIR /usr/src/
+ADD https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-6.5.7.tar.xz /usr/src/
+RUN tar xf linux-6.5.7.tar.xz
+WORKDIR /usr/src/linux-6.5.7/
+RUN vng --configitem CONFIG_DEBUG_KMEMLEAK=y --build