portainer docker swarm CD (GitHub Actions)

deploy.yml

name: Deploy
on:
  workflow_dispatch:
  push:
    branches:
      - master

jobs:
  publish-docker-image:
    name: Publish docker image
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2.3.4
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1
      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.CR_PAT }}
      - name: Build and push docker image
        uses: docker/build-push-action@v2
        with:
          context: .
          file: ./Dockerfile
          push: true
          platforms: linux/arm64 # note we're deploying to a raspberry pi
          tags: ghcr.io/${{ github.repository }}:latest
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache

  deploy:
    name: Deploy app
    runs-on: ubuntu-20.04
    needs: [publish-docker-image]
    steps:
      - name: Deploy
        run: |
          curl --fail -X POST "$DEPLOY_ENDPOINT" || exit 1
        env:
          DEPLOY_ENDPOINT: '${{ secrets.DEPLOY_ENDPOINT }}'