[helm] Error when AKHQ_CONFIGURATION in extraEnv and configMap is mounted

[jakubmatyszewski]

In helm chart, since configmap is created by default, because .Values.configuration is specified^[*], using AKHQ_CONFIGURATION in extraEnv will result in following error:

/usr/local/bin/docker-entrypoint.sh: 6: cannot create /app/application.yml: Read-only file system

It's because docker-entrypoint.sh writes over to /app/application.yml (and configmap is read-only)

Either enforce not mixing up the configmap with AKHQ_CONFIGURATION extraEnv or mount configmap to another location and merge it at final destination.