Service health check error message

When running the example out of the box on the GitLab.com instance runners, a red error message appears in the job log saying FATAL: No HOST or PORT found related to the service health check.

The API scan still works, but the message is potentially confusing to end users and it would be helpful to demonstrate how to prevent it.

I tried a few different approaches in a fork (pasted below) but can't figure out how to get the error message to disappear.

api_security:
    services:
        - name: $TARGET_IMAGE
          alias: target
    variables:
        APISEC_POSTMAN_COLLECTION: postman_collection.json
        APISEC_TARGET_URL: http://target:7777
        HEALTHCHECK_DISABLE: true

api_security:
    services:
        - name: $TARGET_IMAGE
          alias: target
            
    variables:
        APISEC_POSTMAN_COLLECTION: postman_collection.json
        APISEC_TARGET_URL: http://target:7777
        HEALTHCHECK_TCP_PORT: 7777

api_security:
    services:
        - name: $TARGET_IMAGE
          alias: target
          variables:
            HEALTHCHECK_TCP_PORT: 7777

api_security:
    services:
        - name: $TARGET_IMAGE
          alias: target
          variables:
            HEALTHCHECK_TCP_PORT: "7777"