docker-publish.yml

# Copyright 2022 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

name: Publish docker images

on:
  schedule:
    - cron: '0 0 * * *' # each 12:00 UTC
  push:
    branches: [ main ]
    tags: [ 'v*.*.*' ] # semver release
  pull_request:
    branches: [ main ]

env:
  REGISTRY: ghcr.io

jobs:

  build_containers:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    strategy:
      matrix:
        include:
        -   image: ${{github.repository_owner}}/registry-authz-server
            context: "."
            dockerfile: "containers/registry-authz-server/Dockerfile"
        -   image: ${{github.repository_owner}}/registry-spec-renderer
            context: "containers/registry-spec-renderer"
            dockerfile: "containers/registry-spec-renderer/Dockerfile"
        -   image: ${{github.repository_owner}}/registry-prism-mock-server
            context: "containers/registry-mock-server/openapi"
            dockerfile: containers/registry-mock-server/openapi/Dockerfile
        -   image: ${{github.repository_owner}}/registry-graphql-mock-server
            context: "containers/registry-mock-server/graphql"
            dockerfile: containers/registry-mock-server/graphql/Dockerfile
        -   image: ${{github.repository_owner}}/registry-linters
            context: "."
            dockerfile: "containers/registry-linters/Dockerfile"
        -   image: ${{github.repository_owner}}/registry-protoc-gen-doc
            context: "containers/registry-protoc-gen-doc"
            dockerfile: "containers/registry-protoc-gen-doc/Dockerfile"
    steps:
    - name: Checkout repository
      uses: actions/checkout@v3

    # 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@v2
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    # Extract metadata (tags, labels) for Docker
    # https://github.com/docker/metadata-action
    - name: Extract Docker metadata
      id: meta
      uses: docker/metadata-action@v4
      with:
        images: ${{ env.REGISTRY }}/${{ matrix.image }}

    # Build and push Docker image with Buildx (don't push on PR)
    # https://github.com/docker/build-push-action
    - name: Build and push ${{ env.REGISTRY }}/${{ matrix.image }} Docker image
      uses: docker/build-push-action@v4
      with:
        context: ${{ matrix.context }}
        file: ${{ matrix.dockerfile }}
        push: ${{ github.event_name != 'pull_request' }}
        tags: ${{ steps.meta.outputs.tags }}
        labels: ${{ steps.meta.outputs.labels }}