update-trivy-cache.yaml

# Note: This workflow only updates the cache. You should create a separate workflow for your actual Trivy scans.
# In your scan workflow, set TRIVY_SKIP_DB_UPDATE=true and TRIVY_SKIP_JAVA_DB_UPDATE=true.
name: Update Trivy Cache

on:
  schedule:
    - cron: '0 1 * * *'  # Run daily at midnight UTC
  workflow_dispatch:  # Allow manual triggering

jobs:
  update-trivy-db:
    runs-on: ubuntu-latest
    steps:
      - name: Setup oras
        uses: oras-project/setup-oras@v1

      - name: Get current date
        id: date
        run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT

      - name: Login to ghcr.io
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Download and extract the vulnerability DB
        run: |
          mkdir -p $GITHUB_WORKSPACE/.cache/trivy/db
          oras copy ghcr.io/aquasecurity/trivy-db:2 ghcr.io/tiryoh/aquasecurity/trivy-db:2 || echo "err"
          oras pull ghcr.io/aquasecurity/trivy-db:2 || oras pull ghcr.io/tiryoh/aquasecurity/trivy-db:2
          tar -xzf db.tar.gz -C $GITHUB_WORKSPACE/.cache/trivy/db
          rm db.tar.gz

      - name: Download and extract the Java DB
        run: |
          mkdir -p $GITHUB_WORKSPACE/.cache/trivy/java-db
          oras copy ghcr.io/aquasecurity/trivy-java-db:1 ghcr.io/tiryoh/aquasecurity/trivy-java-db:1 || echo "err"
          oras pull ghcr.io/aquasecurity/trivy-java-db:1 || oras pull ghcr.io/tiryoh/aquasecurity/trivy-java-db:1
          tar -xzf javadb.tar.gz -C $GITHUB_WORKSPACE/.cache/trivy/java-db
          rm javadb.tar.gz

      - name: Cache DBs
        uses: actions/cache/save@v4
        with:
          path: ${{ github.workspace }}/.cache/trivy
          key: cache-trivy-${{ steps.date.outputs.date }}