docker-chatbot-rag-app.yml

name: build chatbot-rag-app image

on:
  push:
    branches:
      - main
    paths:
      - example-apps/chatbot-rag-app/**
      - .github/workflows/docker-chatbot-rag-app.yml
      - '!**/*.md'
  pull_request:
    branches:
      - main
    paths:
      # Verify changes to the Dockerfile on PRs, tainted when we update ES.
      - docker/docker-compose-elastic.yml
      - example-apps/chatbot-rag-app/docker-compose.yml
      - example-apps/chatbot-rag-app/Dockerfile
      - .github/workflows/docker-chatbot-rag-app.yml
      - '!**/*.md'
  workflow_dispatch:

permissions:
  contents: read
  packages: write

env:
  IMAGE: ghcr.io/${{ github.repository }}/chatbot-rag-app

jobs:
  build-image:
    strategy:
      matrix:
        runner:
          - ubuntu-24.04
          - ubuntu-24.04-arm
    runs-on: ${{ matrix.runner }}
    steps:
      - uses: actions/checkout@v4
      - uses: docker/setup-buildx-action@v3
      - uses: docker/login-action@v3
        if: github.event_name == 'push'
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      # This builds the image and pushes its digest if a multi-architecture
      # image will be made later (event_name == 'push'). If PR, the image is
      # loaded into docker for testing.
      - uses: docker/build-push-action@v6
        id: build
        with:
          context: example-apps/chatbot-rag-app
          outputs: type=${{ github.event_name == 'pull_request' && 'docker' || 'image' }},name=${{ env.IMAGE }},push-by-digest=true,name-canonical=true,push=${{ github.event_name == 'push' && 'true' || 'false' }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
      - name: start elasticsearch
        if: github.event_name == 'pull_request'
        run: docker compose -f docker/docker-compose-elastic.yml up --quiet-pull -d --wait --wait-timeout 120 elasticsearch
      - name: test image
        if: github.event_name == 'pull_request'
        working-directory: example-apps/chatbot-rag-app
        run: |  # This tests ELSER is working, which doesn't require an LLM.
          cp env.example .env
          # same as `docker compose run --rm -T create-index`, except pull never
          docker run --rm --name create-index --env-file .env --pull never \
            --add-host "localhost:host-gateway" ${{ env.IMAGE }} flask create-index
      - name: export digest
        if: github.event_name == 'push'
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"
      - name: upload digest
        if: github.event_name == 'push'
        uses: actions/upload-artifact@v4
        with:
          name: digests-${{ matrix.runner }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  push-manifest:
    runs-on: ubuntu-24.04
    needs: build-image
    if: github.event_name == 'push'
    steps:
      - uses: actions/checkout@v4
      - uses: docker/setup-buildx-action@v3
      - uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.IMAGE }}
          tags: |
            type=raw,latest
            type=sha,format=long
      - name: Download digests
        uses: actions/download-artifact@v4
        with:
            path: /tmp/digests
            pattern: digests-*
            merge-multiple: true
      - run: ls /tmp/digests
      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ env.IMAGE }}@sha256:%s ' *)
      - name: Inspect image to verify
        run: |
          docker buildx imagetools inspect ${{ env.IMAGE }}:${{ steps.meta.outputs.version }}