buildspec.codebuild.yml

version: 0.2

env:
  variables:
    DOCKER_BUILDKIT: "1"
    CACHE_TAG: "buildcache"
    TARGET_PLATFORM: "linux/arm64"
    TEMPLATE_DIR: "build-templates/docker"

phases:
  pre_build:
    commands:
      - set -eu
      - test -n "${ECR_REPOSITORY_URI:-}"
      - test -n "${CODE_BUCKET:-}"
      - test -n "${S3_KEY:-}"
      - test -n "${IMAGE_TAG:-}"
      - ECR_REGISTRY="$(echo "$ECR_REPOSITORY_URI" | cut -d/ -f1)"
      - ECR_REGION="$(echo "$ECR_REGISTRY" | cut -d. -f4)"
      - echo "Logging in to Amazon ECR..."
      - aws ecr get-login-password --region "$ECR_REGION" | docker login --username AWS --password-stdin "$ECR_REGISTRY"
      - echo "Checking for remote cache image..."
      - |
          if docker pull "$ECR_REPOSITORY_URI:$CACHE_TAG"; then
            echo "--cache-from $ECR_REPOSITORY_URI:$CACHE_TAG" > /tmp/cache-args.txt
            echo "Remote cache found."
          else
            : > /tmp/cache-args.txt
            echo "No remote cache found. First build will proceed without cache."
          fi
      - echo "Downloading code package from S3..."
      - aws s3 cp "s3://$CODE_BUCKET/$S3_KEY" /tmp/code-package.zip
      - rm -rf /tmp/build
      - mkdir -p /tmp/build
      - unzip -q /tmp/code-package.zip -d /tmp/build
      - |
          APP_PACKAGE_JSON="$(find /tmp/build -maxdepth 5 -type f -name package.json -not -path '*/node_modules/*' | head -n 1)"
          if [ -z "$APP_PACKAGE_JSON" ]; then
            echo "ERROR: package.json not found after unzip"
            find /tmp/build -maxdepth 5 -type f -name package.json
            exit 1
          fi
          APP_DIR="$(dirname "$APP_PACKAGE_JSON")"
          echo "$APP_DIR" > /tmp/app-dir.txt
          echo "Building from $APP_DIR"

  build:
    commands:
      - set -eu
      - APP_DIR="$(cat /tmp/app-dir.txt)"
      - CACHE_FROM_ARGS="$(cat /tmp/cache-args.txt)"
      - cp -R "$CODEBUILD_SRC_DIR/$TEMPLATE_DIR" /tmp/template-dir
      - cp "$CODEBUILD_SRC_DIR/scripts/select-dockerfile-template.sh" /tmp/select-dockerfile-template.sh
      - chmod +x /tmp/select-dockerfile-template.sh
      - cd "$APP_DIR"
      - /tmp/select-dockerfile-template.sh /tmp/template-dir
      - echo "Building Docker image..."
      - |
          if [ -n "$CACHE_FROM_ARGS" ]; then
            docker build \
              --platform "$TARGET_PLATFORM" \
              --build-arg BUILDKIT_INLINE_CACHE=1 \
              $CACHE_FROM_ARGS \
              -t "$ECR_REPOSITORY_URI:$IMAGE_TAG" \
              -t "$ECR_REPOSITORY_URI:latest" \
              -t "$ECR_REPOSITORY_URI:$CACHE_TAG" \
              .
          else
            docker build \
              --platform "$TARGET_PLATFORM" \
              --build-arg BUILDKIT_INLINE_CACHE=1 \
              -t "$ECR_REPOSITORY_URI:$IMAGE_TAG" \
              -t "$ECR_REPOSITORY_URI:latest" \
              -t "$ECR_REPOSITORY_URI:$CACHE_TAG" \
              .
          fi

  post_build:
    commands:
      - set -eu
      - |
          if [ "${CODEBUILD_BUILD_SUCCEEDING:-0}" = "1" ]; then
            echo "Pushing Docker image..."
            docker push "$ECR_REPOSITORY_URI:$IMAGE_TAG"
            docker push "$ECR_REPOSITORY_URI:latest"
            docker push "$ECR_REPOSITORY_URI:$CACHE_TAG"
            echo "IMAGE_URI=$ECR_REPOSITORY_URI:$IMAGE_TAG" > /tmp/build-output.txt
            echo "Build completed successfully"
          else
            echo "Build phase failed earlier. Skipping push."
            exit 1
          fi

artifacts:
  files:
    - /tmp/build-output.txt