Earlier quoted context omitted.
Entries are stored in a SQLite database, and uploaded images sit on disk under the configured DATA_DIR. Both are in a single Docker volume.
Since this is largely/almost entirely for private data with occasional publicly accessible content through share links, this is a good candidate to be rebased onto remoteStorage, which gives you auth and storage for free, and there's always an escape hatch for the user to have access to their data—and permit other apps to access it, too. https://remotestorage.io/ >
Hmmm, interesting, I will have a look, thanks!