I am having the same problem. The dockers show a tailscale IP but they aren’t connected to tailscale. I am also having this issue. On the docker screen they have a docker IP but they aren’t connected to tailscale. I have other dockers connected just fine.
I cannot get this to work. MariaDB is setup and running. I get the following error: SQL State : 28000 Error Code : 1045 Message : (conn=8) Access denied for user 'booklore'@'172.17.0.1' (using password: YES)