Docker start sets blank Sensitive Properties Key

The new docker image has a bug in its start.sh file

on creation of the docker container the "nifi.sensitive.props.key" value gets set

on shutdown of the container and startup which triggers the "/opt/nifi/scripts/start.sh" file this gets overwritten because in the "/opt/nifi/scripts/start.sh" file of the docker setup this value gets set to blank making bootup fail due to the "nifi.sensitive.props.key" being required.

This line exists in the start.sh file

prop_replace 'nifi.sensitive.props.key'   "${NIFI_SENSITIVE_PROPS_KEY:-}"

I suspect the intent was to have it replaced with a configurable parameter but the outcome is it currently breaks the Docker image after reboot and its a costly one.