[kunwon1]

I found this too. They mention this:

  Missing build dependencies must be installed manually as shown in our human-readable and versioned Dockerfile.

I haven't been able to find any dockerfile that lists dependencies. My guess is that the documentation is referring to some prior architecture or something similar

[j1elo]

And the word "Dockerfile" is a link to a nonexistent page... they definitely skipped their grep + sed update homework when moving things around.

Noticing the broken link points to photoprism/docker/develop/Dockerfile, I supposed they had moved it and indeed, just by going one parent up, the directoy photoprism/docker/develop/ contains subdirectories for lots of base systems, each one containing a Dockerfile that lists dependencies needed for each of them.

For example, for Ubuntu 20.04:

https://github.com/photoprism/photoprism/blob/develop/docker...