build.yml

name: Build

on:
  pull_request:
    branches:
      - main
      - "release-[0-9].[0-9]+"
    paths-ignore:
      - "**.md"
  push:
    branches:
      - main
      - "release-[0-9].[0-9]+"
    tags:
      - "v*"
    paths-ignore:
      - "**.md"

env:
  IMAGE_NAME: "kserve/rest-proxy"

jobs:
  build:
    runs-on: ubuntu-latest
    env:
      CI: true
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Setup QEMU
        uses: docker/setup-qemu-action@v2

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

      - name: Login to DockerHub
        if: github.event_name == 'push'
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKER_USER }}
          password: ${{ secrets.DOCKER_ACCESS_TOKEN }}

      - name: Export docker build args
        run: |
          # Strip git ref prefix from version
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')

          # Generate PR tag from github.ref == "refs/pull/123/merge"
          [ "$VERSION" == "merge" ] && VERSION=$(echo "${{ github.ref }}" | sed -e 's,refs/pull/\(.*\)/merge,pr-\1,')

          # Use Docker `latest` tag convention
          [ "$VERSION" == "main" ] && VERSION=latest

          echo "IMAGE_TAG=$VERSION" >> $GITHUB_ENV

          # print env vars for debugging
          cat "$GITHUB_ENV"

      - name: Build and push runtime image
        uses: docker/build-push-action@v4
        with:
          platforms: linux/amd64,linux/arm64,linux/ppc64le,linux/s390x
          context: .
          target: runtime
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}
          cache-from: type=gha
          cache-to: type=gha,mode=max