External access and process can come and modify code without fearing of being
replaced at each ``compose up``.
Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>
- enforce specifying lokapi-db in a way or another
- explicit options have priority
- add documentation on the topic and examples
Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>