feat: integrate docker build into CI pipeline

... for linting purposes

Author: Paul Belt

.github/workflows/ci.yml

@@ -150,6 +150,21 @@ jobs:
         run: cargo +${{ matrix.rust }} install --target ${{ matrix.target }} --no-default-features --features max-pure --target-dir install-artifacts --debug --force gitoxide
         shell: msys2 {0}
 
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Build Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./etc/docker/Dockerfile.alpine
+          platforms: linux/amd64,linux/arm64
+          push: false
+          tags: paulbelt/gitoxide:latest
+
   lint:
     runs-on: ubuntu-latest
     steps: