docker-publish.yml

name: Build and Publish Docker Image

# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.

on:
  workflow_dispatch:
  push:
    branches: [ "**" ]
    # Publish semver tags as releases.
    tags: [ 'v*.*.*' ]
    paths:
      - 'app/**/*'
      - 'Dockerfile'
      - 'requirements.txt'
      - '.github/workflows/docker-publish.yml'
  pull_request:
    branches: [ "main" ]
    types: [ closed ]
    paths:
      - 'app/**/*'
      - 'Dockerfile'
      - 'requirements.txt'
      - '.github/workflows/docker-publish.yml'

env:
  # Use docker.io for Docker Hub if empty
  REGISTRY: ghcr.io
  # github.repository as <account>/<repo>
  IMAGE_NAME: ${{ github.repository }}


jobs:
  build:

    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      # This is used to complete the identity challenge
      # with sigstore/fulcio when running outside of PRs.
      id-token: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      # Set up BuildKit Docker container builder to be able to build
      # multi-platform images and export cache
      # https://github.com/docker/setup-buildx-action
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0

      # Login against a Docker registry except on PR
      # https://github.com/docker/login-action
      - name: Log into registry ${{ env.REGISTRY }}
        if: github.event_name != 'pull_request'
        uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          # list of Docker images to use as base name for tags
          images: |
            ghcr.io/${{ github.repository }}        
          # generate Docker tags based on the following events/attributes
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=raw,value=latest,enable={{is_default_branch}}
            type=sha

      # Build and push Docker image with Buildx (don't push on PR)
      # https://github.com/docker/build-push-action
      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0
        with:
          context: .
          target: production
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Discord notification
        env:
          DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
        uses: rjstone/discord-webhook-notify@v1
        with:
          severity: info
          username: MafenBot
          color: '#ff00aa'
          avatarUrl: https://github.githubassets.com/images/modules/logos_page/Octocat.png
          description: A new ${{ github.event.repository.name }} image ${{ steps.meta.outputs.tags }} has been published
          details: Based on ${{ github.event.head_commit.url }}
          footer: MafenBot became self aware
          webhookUrl: ${{ secrets.DISCORD_WEBHOOK }}