publish.yml

---
name: Publish

on:
  release:
    types: [published]

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Docker meta
        id: docker_meta
        uses: crazy-max/ghaction-docker-meta@v1
        with:
          # list of Docker images to use as base name for tags
          images: |
            djjudas21/smtp-relay
      - name: Login to DockerHub
        uses: docker/login-action@v3 
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - name: Build and push
        id: docker_build
        uses: docker/build-push-action@v5
        with:
          push: true
          tags: ${{ steps.docker_meta.outputs.tags }}
      - name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}