cfstep-paclair

Custom Docker image to support clair image scanning from Codefresh pipeline

Prerequisites:

Codefresh Subscription - https://codefresh.io/

Running Clair Instance - Helm Chart is available to install here: https://github.com/coreos/clair/tree/master/contrib/helm

Documentation:

paclair: https://github.com/yebinama/paclair

Tested Registries

Codefresh Registry - No special setup required.

Username is your Codefresh Username and Docker Registry keys can be created here https://g.codefresh.io/user/settings

ECR - Requires AWS CLI credentials with access to ECR. REGISTRY=ecr will find the proper ECR registry using your credentials and image.

AWS CLI Credentials required for ECR: https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html

ENVIRONMENT VARIABLE
AWS_ACCESS_KEY_ID
AWS_DEFAULT_REGION
AWS_SECRET_ACCESS_KEY

Registries with Basic auth and Token based auth should work.

Full List of Options

To use an ENVIRONMENT VARIABLE you need to add the variables to your Codefresh Pipeline and also to your codefresh.yml.

Example codefresh.yml build is below with required ENVIRONMENT VARIABLES in place.

ENVIRONMENT VARIABLE	DEFAULT	TYPE	REQUIRED	DESCRIPTION
API_PREFIX	null	string	No	Prefix for API to Docker Registry
CF_ACCOUNT	Codefresh Account Name	string	No	Codefresh Account Name (Skipped for ECR)
CLAIR_URL	null	string	Yes	https://clair.domain.com:6060
IMAGE	null	string	Yes	Docker Image Name
PROTOCOL	https	string	No	Docker Registry Protocol
REGISTRY	r.cfcr.io	string	No	For ECR use ecr else use domain name for Docker Registry
REGISTRY_PASSWORD	null	string	Yes	Docker Registry Password
REGISTRY_USERNAME	null	string	Yes	Docker Registry Username
SEVERITY_THRESHOLD	null	string	No	critical, high, medium, low, negligible, unknown
TOKEN	null	string	No	Docker Registry Auth Token
TOKEN_TYPE	Bearer	string	No	Docker Registry Auth Token Type
TOKEN_URL	null	string	No	Docker Registry Auth Token URL
TAG	null	string	Yes	Docker Image Tag

SEVERITY_THRESHOLD

If variable is set step will check that the threshold is not met or exceeded.

For example, high would fail your build if you had high or critical vulnerabilties on your Docker image.

codefresh.yml

Codefresh Build Step to execute Clair scan. All ${{var}} variables must be put into Codefresh Build Parameters codefresh.yml

version: '1.0'
steps:
  BuildingDockerImage:
    title: Building Docker Image
    type: build
    image_name: codefresh/demochat # Replace with your Docker image name
    working_directory: ./
    dockerfile: Dockerfile
    tag: '${{CF_BRANCH_TAG_NORMALIZED}}'
  CheckClair:
    image: codefresh/cfstep-paclair:3.1.0
    environment:
      - IMAGE=example-voting-app/worker # Replace with your Docker image name
      - TAG=${{CF_BRANCH_TAG_NORMALIZED}}
    on_success: # Execute only once the step succeeded
      metadata: # Declare the metadata attribute
        set: # Specify the set operation
          - ${{BuildingDockerImage.imageId}}: # Select any number of target images
            - SECURITY_SCAN: true
    on_fail: # Execute only once the step failed
      metadata: # Declare the metadata attribute
        set: # Specify the set operation
          - ${{BuildingDockerImage.imageId}}: # Select any number of target images
            - SECURITY_SCAN: false
  ArchiveReport:
    image: mesosphere/aws-cli
    commands:
      - aws s3 cp ./reports/clair-scan-example-voting-app-worker-${{CF_BRANCH_TAG_NORMALIZED}}.html s3://${{S3_BUCKETNAME}}/${{CF_BUILD_ID}}/clair-scan-example-voting-app-worker-${{CF_BRANCH_TAG_NORMALIZED}}.html --acl public-read
    on_success:
     metadata:
        set:
          - ${{BuildingDockerImage.imageId}}:
              - CLAIR_REPORT: "https://s3.amazonaws.com/${{S3_BUCKETNAME}}/${{CF_BUILD_ID}}/clair-scan-example-voting-app-worker-${{CF_BRANCH_TAG_NORMALIZED}}.html"

The HTML report is stored in ./reports/clair-scan-{image name}-{image tag}.html Any / characters in {image name} are replaced with -

Optional Storage Step Variables for AWS S3:

ENVIRONMENT VARIABLE	DEFAULT	TYPE	REQUIRED	DESCRIPTION
AWS_ACCESS_KEY_ID	null	string	No	AWS Access Key of S3 Bucket
AWS_DEFAULT_REGION	null	string	Yes	AWS Region of S3 Bucket
AWS_SECRET_ACCESS_KEY	null	string	Yes	AWS Secret Key of S3 Bucket
S3_BUCKETNAME	null	string	Yes	Name of S3 Bucket to Store Reports

Notes

Not yet supporting manual Cert validation. Coming soon along with tests.