Is docker saving products/changes in magento2 to container?

[boban-dj]

When adding a product or category in magento2 and docker image is stopped everything is saved. The docker image rafaelcgstz/magento2 after stop is still containing the changes.
I could not discover any docker commits from the shell scripts.
I can see mail is not saved in image after start/stop docker.

What is your normal workflow, commit all containers to new images?
Do you modify docker-compose.yml after commiting to start new containers?

[JackWormUK]

@boban-dj I am not sure what you are trying to do here?

Products and Categories are saved into the MYSQL database and then indexed by Magento and displayed.