container.yml

name: container

on:
  push:
    branches:
      - main
    paths:
      - Dockerfile
      - main.go
      - go*
      - .github/workflows/container.yml
    tags:
      - v*
  pull_request:
    branches:
      - main
  schedule:
    - cron: "0 0 * * *"
  workflow_dispatch:

env:
  PLATFORMS: linux/amd64,linux/arm64,linux/arm/v7
  GHCR_CONTAINER_IMAGE: ghcr.io/${{ github.repository }}

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Clone repository
        uses: actions/checkout@v2

      - name: Generate container metadata
        id: meta
        uses: crazy-max/ghaction-docker-meta@v1
        with:
          images: ${{ env.GHCR_CONTAINER_IMAGE }}

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1

      - name: Set up Buildx
        uses: docker/setup-buildx-action@v1

      - name: Log in to GitHub Container Registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push container image
        uses: docker/build-push-action@v2
        with:
          cache-from: type=registry,ref=${{ env.GHCR_CONTAINER_IMAGE }}:main
          cache-to: type=inline
          platforms: ${{ env.PLATFORMS }}
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}