docker-publish.yml

# Copyright 2023 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: apigeecli Container Release

# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.

on:
  push:
    # Publish semver tags as releases.
    tags:
      - v[0-9].[0-9]+.[0-9]
      - v[0-9].[0-9]+.[0-9]+-beta.[0-9]
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: apigee/apigeecli
  TAG: ${{ github.ref_name }}
  COMMIT: ${{ github.sha }}


jobs:
  build:

    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3.5.2
        with:
          fetch-depth: 1

      # Install the cosign tool except on PR
      # https://github.com/sigstore/cosign-installer
      - name: Install cosign
        if: github.event_name != 'pull_request'
        uses: sigstore/cosign-installer@v3.5.0

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2.1.0

      - name: Setup Docker buildx
        uses: docker/setup-buildx-action@v2.5.0

      # 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@v2.1.0
        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@v4.4.0
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=tag
            type=raw,value=latest
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha

      # Build and push Docker image with Buildx (don't push on PR)
      # https://github.com/docker/build-push-action
      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@v4.0.0
        with:
          context: .
          file: Dockerfile
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            TAG=${{ env.TAG }}
            COMMIT=${{ env.COMMIT }}

      # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
      - name: Sign image with a key
        run: |
          echo "${{ env.COSIGN_PRIVATE_KEY }}" > /tmp/cosign.key
          cosign sign --yes --key=/tmp/cosign.key --output-signature=/tmp/apigeecli.sig ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build-and-push.outputs.digest }}
        env:
          COSIGN_PRIVATE_KEY: ${{ secrets.COSIGN_PRIVATE_KEY }}
          COSIGN_PASSWORD: ${{ secrets.COSIGN_PASSWORD }}
          DIGEST: ${{ steps.build-and-push.outputs.digest }}

      - name: Sign the image with GitHub OIDC Token
        env:
          DIGEST: ${{ steps.build-and-push.outputs.digest }}
          TAGS: ${{ steps.meta.outputs.tags }}
        run: |
          cosign sign --yes ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build-and-push.outputs.digest }}