build: add workflow to build static docker images based on Alpine

Signed-off-by: deadprogram <[email protected]>

.github/workflows/docker-alpine.yml

@@ -0,0 +1,91 @@
+# This is the Github action to build and push the gocv/opencv Docker images.
+#
+name: Docker
+on:
+  push:
+    branches: [build-opencv-alpine, alpine-static]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  opencv-static:
+    name: opencv-static
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+    steps:
+      - name: Check disk space
+        run: df . -h
+      - name: Free disk space
+        run: |
+          sudo docker rmi $(docker image ls -aq) >/dev/null 2>&1 || true
+          sudo rm -rf \
+            /usr/share/dotnet /usr/local/lib/android /opt/ghc \
+            /usr/local/share/powershell /usr/share/swift /usr/local/.ghcup \
+            /usr/lib/jvm || true
+          echo "extra directories deleted"
+          sudo apt install aptitude -y >/dev/null 2>&1
+          sudo aptitude purge aria2 ansible azure-cli shellcheck rpm xorriso zsync \
+            esl-erlang firefox gfortran-8 gfortran-9 google-chrome-stable \
+            google-cloud-sdk imagemagick \
+            libmagickcore-dev libmagickwand-dev libmagic-dev ant ant-optional kubectl \
+            mercurial apt-transport-https mono-complete libmysqlclient \
+            unixodbc-dev yarn chrpath libssl-dev libxft-dev \
+            libfreetype6 libfreetype6-dev libfontconfig1 libfontconfig1-dev \
+            snmp pollinate libpq-dev postgresql-client powershell ruby-full \
+            sphinxsearch subversion mongodb-org azure-cli microsoft-edge-stable \
+            -y -f >/dev/null 2>&1
+          sudo aptitude purge google-cloud-sdk -f -y >/dev/null 2>&1
+          sudo aptitude purge microsoft-edge-stable -f -y >/dev/null 2>&1 || true
+          sudo apt purge microsoft-edge-stable -f -y >/dev/null 2>&1 || true
+          sudo aptitude purge '~n ^mysql' -f -y >/dev/null 2>&1
+          sudo aptitude purge '~n ^php' -f -y >/dev/null 2>&1
+          sudo aptitude purge '~n ^dotnet' -f -y >/dev/null 2>&1
+          sudo apt-get autoremove -y >/dev/null 2>&1
+          sudo apt-get autoclean -y >/dev/null 2>&1
+          echo "extra packages purged"
+      - name: Check disk space
+        run: df . -h
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Check out the repo
+        uses: actions/checkout@v4
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            gocv/opencv:4.10.0-alpine
+            ghcr.io/${{ github.repository_owner }}/opencv:4.10.0-alpine
+          tags: |
+            type=sha,format=long
+            type=raw,value=latest
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+      - name: Log in to Github Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          file: Dockerfile.opencv-static-alpine
+          platforms: linux/amd64,linux/arm64
+          context: .
+          push: true
+          tags: |
+            gocv/opencv:4.10.0-alpine
+            ghcr.io/${{ github.repository_owner }}/opencv:4.10.0-alpine
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max