docker-build.yml

name: Docker Build

on:
  workflow_call:
    inputs:
      dockerfile:
        description: "Path to Dockerfile"
        type: string
        default: "Dockerfile"
      build_context:
        description: "Docker build context"
        type: string
        default: "."
      aws_account_id:
        description: "AWS account ID"
        type: string
        default: "553637109631"
      aws_region:
        description: "AWS region"
        type: string
        default: "eu-central-1"
    outputs:
      image_uri:
        description: "Full image URI with tag"
        value: ${{ jobs.build.outputs.image_uri }}
      image_tag:
        description: "Primary image tag (sha-*)"
        value: ${{ jobs.build.outputs.image_tag }}

permissions:
  id-token: write
  contents: read

jobs:
  build:
    name: Docker Build
    runs-on: ubuntu-latest
    outputs:
      image_uri: ${{ steps.push.outputs.image_uri }}
      image_tag: ${{ steps.tags.outputs.primary_tag }}
    steps:
      - name: Set session name
        run: echo "SESSION_NAME=$(echo "${GITHUB_ACTOR}-${GITHUB_SHA:0:8}-${GITHUB_RUN_ID}" | head -c 64)" >> "$GITHUB_ENV"

      - uses: actions/checkout@v6

      - name: Generate GitHub App token
        id: app-token
        uses: actions/create-github-app-token@v2
        with:
          app-id: ${{ secrets.PLATFORM_APP_ID }}
          private-key: ${{ secrets.PLATFORM_APP_PRIVATE_KEY }}
          owner: javaBin

      - name: Checkout platform scripts
        uses: actions/checkout@v6
        with:
          repository: javaBin/platform
          token: ${{ steps.app-token.outputs.token }}
          path: .platform
          sparse-checkout: scripts

      - name: Assume broker role via OIDC
        uses: aws-actions/configure-aws-credentials@v6
        with:
          role-to-assume: arn:aws:iam::${{ inputs.aws_account_id }}:role/javabin-ci-app-broker
          aws-region: ${{ inputs.aws_region }}
          role-session-name: ${{ env.SESSION_NAME }}

      - name: Get deploy credentials from broker
        id: broker
        env:
          PROJECT: javabin
        run: sh .platform/scripts/invoke-ci-broker.sh deploy

      - name: Login to ECR
        id: ecr
        uses: aws-actions/amazon-ecr-login@v2

      - name: Determine image tags
        id: tags
        env:
          TEAM: ${{ steps.broker.outputs.team }}
          REPO_NAME: ${{ github.event.repository.name }}
          REF_NAME: ${{ github.ref_name }}
          REF: ${{ github.ref }}
          REGISTRY: ${{ steps.ecr.outputs.registry }}
        run: |
          REPO="${REGISTRY}/${TEAM}-${REPO_NAME}"
          SHA_TAG="sha-${GITHUB_SHA::8}"
          echo "primary_tag=${SHA_TAG}" >> "$GITHUB_OUTPUT"
          echo "repo=${REPO}" >> "$GITHUB_OUTPUT"

          TAGS="${REPO}:${SHA_TAG}"

          if [ "${REF_NAME}" = "main" ] || [ "${REF_NAME}" = "master" ]; then
            DATE_TAG="main-$(date -u +%Y%m%d-%H%M)"
            TAGS="${TAGS},${REPO}:${DATE_TAG},${REPO}:latest"
          fi

          if echo "${REF}" | grep -q '^refs/tags/v'; then
            TAGS="${TAGS},${REPO}:${REF_NAME}"
          fi

          echo "tags=${TAGS}" >> "$GITHUB_OUTPUT"

      - uses: docker/setup-buildx-action@v4

      - name: Build and push
        uses: docker/build-push-action@v7
        with:
          context: ${{ inputs.build_context }}
          file: ${{ inputs.dockerfile }}
          push: true
          tags: ${{ steps.tags.outputs.tags }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Set output
        id: push
        run: echo "image_uri=${{ steps.tags.outputs.repo }}:${{ steps.tags.outputs.primary_tag }}" >> "$GITHUB_OUTPUT"