As much as I understand the reason for verifying the Docker image name in the Dockerfile, the current approach makes multistage Dockerfiles impossible.

Example:

FROM cloudblueconnect/connect-extension-runner:28.7 AS build
...
FROM build AS deploy
...

Please modify the validation in connect/eaas/core/validation/validators/base.py/validate_docker_compose_yml, so that it removes the AS <stage name> part (if existing) of the FROM line and then compares it to the pre-calculated image name.