Configure CI/CD

.github/workflows/dockerpush.yml

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+name: Docker
+
+on:
+  push:
+    # Publish `master` as Docker `latest` image.
+    branches:
+      - master
+
+    # Publish `v1.2.3` tags as releases.
+    tags:
+      - v*
+
+  # Run tests for any PRs.
+  pull_request:
+
+env:
+  REPOSITORY: cyrilix
+  IMAGE_NAME: robocar-arduino
+
+jobs:
+  # Run tests.
+  # See also https://docs.docker.com/docker-hub/builds/automated-testing/
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: crazy-max/ghaction-docker-buildx@v1
+        with:
+          version: latest
+
+      - name: Run tests
+        run: |
+          if [ -f docker-compose.test.yml ]; then
+            docker-compose --file docker-compose.test.yml build
+            docker-compose --file docker-compose.test.yml run sut
+          else
+            docker buildx build . --file Dockerfile --platform linux/arm/v7,linux/arm64,linux/amd64 --progress plain
+          fi
+
+  # Push image to GitHub Package Registry.
+  # See also https://docs.docker.com/docker-hub/builds/
+  push:
+    # Ensure test job passes before pushing image.
+    needs: test
+
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push'
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: crazy-max/ghaction-docker-buildx@v1
+        with:
+          version: latest
+
+      - name: Log into registry
+        env:
+          username: ${{ secrets.dockerhub_username }}
+          password: ${{ secrets.dockerhub_token }}
+        run: echo "${password}" | docker login -u ${username} --password-stdin
+
+      - name: Push image
+        run: |
+          IMAGE_ID=$REPOSITORY/$IMAGE_NAME
+
+          # Strip git ref prefix from version
+          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+
+          # Use Docker `latest` tag convention
+          [ "$VERSION" == "master" ] && VERSION=latest
+
+          echo IMAGE_ID=$IMAGE_ID
+          echo VERSION=$VERSION
+
+          docker buildx build . --platform linux/arm/v7,linux/arm64,linux/amd64 --progress plain --push --tag $IMAGE_ID:$VERSION
+