I don’t self-host a lot of things, but I’d say this is not the easiest I’ve done, just because it involves setting up multiple containers (unlike something like SearXNG). Also thought that I had to set-up an SMTP container, but I got away with not having to do it.
I used ansible (and pass to store credentials), so this is how I did it (maybe someone can pitch in and tell me what I can improve):
Finally, you then have to login with user:wallabag and password:wallabag and change them in the webUI. I changed the “wallabag” user to my user and set a new password.