Post cached scan db
##[warning]The process '/bin/tar' failed with exit code 2
Post job cleanup.
/bin/tar -cz -f /home/runner/work/_temp/28e557d6-3aeb-4359-9a00-d29f2722deda/cache.tgz -C /home/runner/work/iron-alpine/iron-alpine/vulndb .
/bin/tar: ./db: Cannot open: Permission denied
/bin/tar: ./vuln-list: Cannot open: Permission denied
/bin/tar: Exiting with failure status due to previous errors
##[warning]The process '/bin/tar' failed with exit code 2

  dockerscan:
    name: image security scan
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@master
    - name: docker build
      run: docker build . --file Dockerfile --tag image
    - name: cached scan db
      uses: actions/cache@preview
      with:
        path: vulndb/
        key: ${{ runner.os }}-vulndb
    - name: run security scan
      run: |
        docker run --rm \
          -v /var/run/docker.sock:/var/run/docker.sock \
          -v "$(pwd)/vulndb/":/root/.cache/ \
          aquasec/trivy --severity HIGH,CRITICAL,MEDIUM --no-progress --auto-refresh --ignore-unfixed --exit-code 1 --cache-dir /root/.cache/ image