I personally have a Mediawiki set up that my wife and I have used for years, but it’s not something I want to share wider. I haven’t found it hard to maintain, though (I’m using the docker version).
How do you use the Dokuwiki? Do you create a page for each family event with pictures and videos and things? Then other people can go and have a look? What kind of organisation structure do you use? How do others learn that there is a new page to see?
Wow, good effort on that!
Honestly, this is low down on my list. Yes, it would be great, but I have had enough trouble finding something that handles uploading videos ok. Emoji responses are not a mandatory thing for me.
Pixelfed is an interesting suggestion. It always feels like it’s intended to be public. Were you thinking each user would have to configure default privacy settings? I can see how to restrict to followers but haven’t yet found how to stop anyone being able to follow you. I think for me, if a new user has to set up the privacy settings to stop them posting everything public, that’s probably not the right platform.
BTW there is PixelDroid as a dedicated Pixelfed app, but it’s only on Fdroid.