mirror-trivy-db.yml

name: Mirror Docker Images to GHCR

on:
  schedule:
    # Run 30 mins after trivy DB runs (the trivy job takes 15 mins max)
    # https://github.com/aquasecurity/trivy-db/blob/cfa337a1088bbcee598ab93656c83fe6b9acb946/.github/workflows/cron.yml#L5
    # https://github.com/aquasecurity/trivy-db/actions
    - cron: '30 */6 * * *'

  workflow_dispatch: # Allows manual triggering of the workflow

jobs:
  mirror-dbs:
    runs-on: ubuntu-latest
    env:
      RETRIES: 100

    steps:
      - name: Install Skopeo
        run: |
          sudo apt-get update
          sudo apt-get install -y skopeo

      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Log in to GHCR
        run: echo "${{ secrets.GITHUB_TOKEN }}" | skopeo login ghcr.io -u ${{ github.actor }} --password-stdin

      - name: Create mirror-image.sh script
        run: |
          cat << 'EOF' > mirror-image.sh
          #!/usr/bin/env bash
          set -o errexit -o nounset -o pipefail

          if [ "$#" -ne 3 ]; then
            echo "Usage: $0 <source_image> <destination_image> <retries>"
            exit 1
          fi

          SOURCE_IMAGE=$1
          DESTINATION_IMAGE=$2
          RETRIES=$3
          COUNT=0

          until skopeo copy "$SOURCE_IMAGE" "$DESTINATION_IMAGE" || [ $COUNT -ge $RETRIES ]; do
            COUNT=$((COUNT+1))
            echo "Retry $COUNT/$RETRIES for $SOURCE_IMAGE to $DESTINATION_IMAGE..."
            sleep 1
          done

          if [ $COUNT -ge $RETRIES ]; then
            echo "Failed to mirror $SOURCE_IMAGE after $RETRIES attempts."
            exit 1
          fi

          echo "Successfully mirrored $SOURCE_IMAGE to $DESTINATION_IMAGE."
          EOF

      - name: Make mirror-image.sh executable
        run: chmod +x mirror-image.sh

      - name: Mirror trivy-db to GHCR
        run: ./mirror-image.sh docker://ghcr.io/aquasecurity/trivy-db:2 docker://ghcr.io/${{ github.repository_owner }}/trivy-db:2 ${{ env.RETRIES }}

      - name: Mirror trivy-java-db to GHCR
        run: ./mirror-image.sh docker://ghcr.io/aquasecurity/trivy-java-db:1 docker://ghcr.io/${{ github.repository_owner }}/trivy-java-db:1 ${{ env.RETRIES }}