with docker compose not retaining data

[kenshiro75]

hi,

when i launch the command "docker-compose up -d" the container will correctly start and i can log in on localhost:8080 with admin/password credentials; then (for example) i create a new data source connection.
if i logout and login again i still see the data source.
However if i stop the container with "docker-compose down" and launch it again with "docker-compose up -d" the data source has disappeared!!

what should i add to the docker-compose.yml to get the container save my work/changes ?

thank u in advance.

Ken