Deploy to Gyro Containers automatically with GitHub Actions: build, push, release

git push → GitHub Actions: docker build → docker push (Gyro registry)
                         → gyro container service update (new revision, no downtime)
                         → check; if it fails, gyro container service rollback

name: Deploy to Gyro
on:
  push:
    branches: [main]

env:
  REGISTRY: registry.ist.gyrohosting.com
  SERVICE: web                        # the service name in Gyro Containers

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Log in to the registry
        run: echo "${{ secrets.GYRO_REGISTRY_PASSWORD }}" | docker login $REGISTRY -u "${{ secrets.GYRO_REGISTRY_USER }}" --password-stdin

      - name: Build and push
        run: |
          IMAGE=$REGISTRY/${{ vars.GYRO_CODE }}/$SERVICE:${{ github.sha }}
          docker build -t "$IMAGE" .
          docker push "$IMAGE"
          echo "IMAGE=$IMAGE" >> "$GITHUB_ENV"

      - name: Install the gyro CLI
        run: |
          curl -fsSL https://www.gyrohosting.com/cli/install.sh | GYRO_INSTALL_DIR="$HOME/.local/bin" sh
          echo "$HOME/.local/bin" >> "$GITHUB_PATH"

      - name: Release the new revision
        env:
          GYRO_TOKEN: ${{ secrets.GYRO_TOKEN }}
        run: |
          gyro container service update ${{ vars.GYRO_ENV_ID }} $SERVICE \
            --image "$IMAGE" --reason "${{ github.sha }}" --yes

      - name: Verify the release (up to 5 min)
        env:
          GYRO_TOKEN: ${{ secrets.GYRO_TOKEN }}
        run: |
          for i in $(seq 1 30); do
            STATE=$(gyro container service get ${{ vars.GYRO_ENV_ID }} $SERVICE -o json --query state | tr -d '"')
            echo "state: $STATE"
            [ "$STATE" = "running" ] && exit 0
            sleep 10
          done
          echo "Release did not complete, rolling back to the previous revision"
          gyro container service rollback ${{ vars.GYRO_ENV_ID }} $SERVICE --yes
          exit 1