Lost data if shutdown and restart?

Hello,
I created a Minecraft server based on the example docker-compose.yml and specified the storage as a docker volume that i had created.... then I shutdown the server to make some changes and maintenance it and when i restarted it my MC world was gone! How do I get docker to save my Minecraft world so that even if i reboot or stop the server my world wont be erased?

Start by reviewing the example docker-compose.yml and its Docker volume configuration, then reproduce the reported shutdown and restart flow. Done means the Minecraft world remains available after stopping, rebooting, and restarting the server.

Written by the indexing model from the issue text.