docker.yml

name: Build and Push Docker Images

on:
  workflow_dispatch:
  push:
    branches: [main]
  pull_request:
    branches: [main]
  release:
    types: [published]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  packages: write

jobs:
  build_and_push:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3.7.1

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3.3.0
        # Skip when PR from a fork
        if: ${{ !github.event.pull_request.head.repo.fork }}
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Generate docker image tags
        id: metadata
        uses: docker/metadata-action@v5
        with:
          flavor: |
            # Disable latest tag
            latest=false
          images: |
            name=ghcr.io/${{ github.repository_owner }}/discord-bot
          tags: |
            # Tag with branch name
            type=ref,event=branch
            # Tag with git tag on release
            type=ref,event=tag

      - name: Build and push image
        uses: docker/build-push-action@v6.10.0
        with:
          platforms: linux/amd64
          # Skip pushing when PR
          push: ${{ !github.event.pull_request }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          tags: ${{ steps.metadata.outputs.tags }}
          labels: ${{ steps.metadata.outputs.labels }}
          build-args: COMMIT=${{ github.sha }}