Container Security: GitLab Trivy Container Scanning

gitlab-container-scanning.md

A Simple and Comprehensive Vulnerability Scanner for Containers, Suitable for CI.

It is considered to be used in CI. Before pushing to a container registry, you can scan your local container image easily.

Most of my Docker images are Alpine based. Trivy uses better vulnerability data for Alpine compared to Clair.

This can be easily plugged in to you CI/CD pipeline - in the scenario we we allow the pipeline to fail, the objective here is to provide visibility.

scan-container-trivy:
  image:
    name: docker.io/aquasec/trivy:latest
    entrypoint: ["/bin/sh"]
  stage: scan
  allow_failure: true
  interruptible: true
  variables:
    GIT_STRATEGY: none
    TRIVY_DEBUG: "true"
    TRIVY_FORMAT: "json"
    TRIVY_SEVERITY: "HIGH,CRITICAL"
    TRIVY_EXIT_CODE: "1"
    TRIVY_VULN_TYPE: "os,library"
    TRIVY_TIMEOUT: "5m"
    # TRIVY_NO_PROGRESS: "true"
    TRIVY_OUTPUT: "gl-container-scanning-report.json"
  timeout: 5m
  retry:
    max: 2
    when:
      - runner_system_failure
      - stuck_or_timeout_failure
  when: on_success
  script:
    - trivy "${IMAGE_NAME}"
  artifacts:
    reports:
      container_scanning: gl-container-scanning-report.json
    expire_in: 1 day
  when: on_success
  only:
    refs:
      - merge_requests
    variables:
      - $IMAGE_NAME

This can be adapted to any other CI pipelines

GitLab is in the process of implementing a varient of this see issue here