bug: Images get not cached correctly

[jo-gross]

Have you checked, if there already is any existing issue mentioning the same problem?

• I have searched the existing issues and nothing seems to be related to my problem.

Environment and Version

v.1.11.1

What browsers are you seeing the problem on?

Firefox, Chrome, Safari

Current Behavior

For a proper image caching an image need the correct headers.

Expected Behavior

Add the cache header to the image response

Anything else?

No response

[jo-gross]

Maybe think about moving them out of the objects to
a) a seperate table - maybe in long term a bit improvement
b) optional S3/MinIO Bucket