docker.yml

# SPDX-FileCopyrightText: 2021 Robin Vobruba <hoijui.quaero@gmail.com>
#
# SPDX-License-Identifier: Unlicense

name: Publish Docker image

on:
  push:
    branches: [ master ]
    paths:
      - 'Dockerfile'
      - 'run/*'
      - '.github/workflows/docker.yml'
    tags:
      - 'v?[0-9]+.[0-9]+.[0-9]+'
#  release:
#    types: [published]

jobs:
  publish_docker_images:
    name: Push Docker image to Docker Hub
    runs-on: ubuntu-latest
    steps:
      - name: Check out the repo
        uses: actions/checkout@v4

      - name: Generating build/Dockerfile_REPLACED
        # ... by fetching latest Nim and Git versions,
        # and injecting them into Dockerfile
        run: |
          run/inject-dockerfile
          echo "############################################################"
          cat build/Dockerfile_REPLACED
          echo "############################################################"

      - name: Generate Docker meta-info
        id: meta
        uses: docker/metadata-action@v3
        with:
          images: hoijui/nim-ci
          tags: |
            type=raw,value=latest,enable=${{ endsWith(github.ref, 'master') }}
            type=match,value=latest,pattern=v?([0-9]+.[0-9]+.[0-9]+),group=1
            type=ref,event=branch
            type=ref,event=tag
            type=sha
          flavor: |
            latest=false

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

      # So now you can use Actions' own caching!
      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Login to DockerHub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Build and push to DockerHub
        uses: docker/build-push-action@v2
        with:
          file: build/Dockerfile_REPLACED
          context: .
          pull: true
          push: ${{ github.event_name != 'pull_request' }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache-new
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

        # This ugly bit is necessary if you don't want your cache to grow forever
        # till it hits GitHub's limit of 5GB.
        # Temp fix
        # https://github.com/docker/build-push-action/issues/252
        # https://github.com/moby/buildkit/issues/1896
      - name: Move cache (HACK)
        run: |
          rm -rf /tmp/.buildx-cache
          mv /tmp/.buildx-cache-new /tmp/.buildx-cache