rebuild-image.yaml

name: Rebuild image

on:
  workflow_dispatch:
    inputs:
      directory:
        description: 'Name of the directory for image - e.g. kube-oidc-proxy'
        type: string
        required: true
      build-args:
        description: 'Arguments for generating build args e.g. SOURCE_IMAGE_VERSION=1.0.6'
        type: string
        required: false
      platforms:
        description: 'Comma separated list of platforms to build the image for. A multi-platform image will be built if more than one platform is specified.'
        type: string
        default: linux/amd64
      push:
        description: 'Push the image to GHCR'
        type: boolean
        default: false

permissions:
  packages: write

jobs:

  build_image:

    runs-on:
      - self-hosted
      - small

    steps:

      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_READ_ONLY_USERNAME }}
          password: ${{ secrets.DOCKERHUB_READ_ONLY_PASSWORD }}

      - name: Login to GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Gather build args
        shell: bash
        id: build-args
        working-directory: ./${{ inputs.directory }}
        run: |
          BUILD_ARGS=$(make build-args ${{ inputs.build-args }})
          {
            echo 'value<<EOF'
            echo "$BUILD_ARGS"
            echo 'EOF'
          } >> "$GITHUB_OUTPUT"

          export $(echo "$BUILD_ARGS" | xargs)
          echo "target_image=$TARGET_IMAGE" >> "$GITHUB_OUTPUT"

      - name: Build and push image
        id: build
        uses: docker/build-push-action@v5.1.0
        with:
          context: ./${{ inputs.directory }}
          platforms: ${{ inputs.platforms }}
          build-args: ${{ steps.build-args.outputs.value }}
          push: ${{ inputs.push }}
          load: ${{ ! inputs.push }}
          tags: ${{ steps.build-args.outputs.target_image }}