build.yml

name: Build

on: [push, pull_request]

jobs:
  build:
    runs-on: ubuntu-latest
    if: "!contains(github.event.head_commit.message, 'ci skip')"
    steps:
      - uses: actions/checkout@v1

      - name: Variables
        id: vars
        run: |
          echo ::set-output name=REPOSITORY_NAME::$(echo "$GITHUB_REPOSITORY" | awk -F / '{print $2}')
          echo ::set-output name=SOURCE_NAME::${GITHUB_REF#refs/*/}
          echo ::set-output name=SOURCE_BRANCH::${GITHUB_REF#refs/heads/}
          echo ::set-output name=SOURCE_TAG::${GITHUB_REF#refs/tags/}

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

      - uses: docker/setup-buildx-action@v1
        name: Setup Docker Buildx

      - uses: docker/build-push-action@v2
        name: Build
        with:
          context: .
          platforms: linux/amd64

      - uses: docker/login-action@v1
        name: Login to Docker Hub
        if: github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/v')
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_TOKEN }}

      - uses: docker/build-push-action@v2
        name: Push latest
        if: github.ref == 'refs/heads/master'
        with:
          context: .
          platforms: linux/amd64
          tags: ${{ secrets.DOCKER_HUB_USERNAME }}/${{ steps.vars.outputs.REPOSITORY_NAME }}:latest
          push: true

      - uses: docker/build-push-action@v2
        name: Push tag
        if: startsWith(github.ref, 'refs/tags/v')
        with:
          context: .
          platforms: linux/amd64
          tags: ${{ secrets.DOCKER_HUB_USERNAME }}/${{ steps.vars.outputs.REPOSITORY_NAME }}:${{ steps.vars.outputs.SOURCE_TAG }}
          push: true