I wanted to modify the email environment variables passed into the docker images so I issued a docker-compose down and docker-compose up -d. Once it came up successfully I noticed the image I had uploaded for one site won't load. Are these stored somewhere in the docker image rather than in the database or a non-volatile volume or filesystem?

The server issues a 404 for that image:

https://meli.jampony.net/api/v1/sites/883e900d-eae1-42f2-9afa-3c84a270c6da/logo?id=bd9c3c27-f083-4aaa-ade9-1d6be2c17dca

Resulting in a broken image link and the alt text "bubble" being shown:

Might also be worth changing the alt text to an empty string to indicate the image is purely decorative.