I don't even know if that's being maintained. I couldnt find anything on docker hub. It does look like this one is maintained though https://blog.pixelfed.de/2020/05/29/pixelfed-in-docker/
Maybe give that one a try. It seems like you are already using his image anyway. Also it seems like the command to run for the worker is different in his image.
If you have issues with that setup, feel free to post what issues you having.
Technically you don't really need to setup a bunch of networks unless you are trying to host this or something, which I wouldn't recommend docker compose anyway. So, if you wanted to keep it simple, you could just the default network.
Another note, while zknt/pixelfed does exist on docker hub. It was moved to quay, so continue using that image.
I am currently sitting at lvl 52 in the new season and I'm finding it hard to continue. I hate the changes. Not only did the patch add no value, it took away a lot. They added more annoying bugs.
Wtf do I do with all these jewels. Oh I know, lets add more jewels and call them hearts.
It's even more of a grind now and it doesn't feel rewarding at all.
They hyped up this patch so much and it feels like it provided no additional content to the game. I'm probably done with the game at this point. I wanted to try out the new season before getting a season pass to support the game, but definitely not going to support this game anymore.