Hi Björn,
a) Does this mean that since Version 8.6 there is no officially supported web interface for basex?
There still is. DBA is still part of BaseX, but it doesn’t provide means to connect remotely.
b) What is the difference between the basex/basexhttp and basex/dba images? (I think the documentation at https://hub.docker.com/r/basex/basexhttp/ is now misleading)
Personally, I can’t say anything about Docker. Maybe someone else on the list knows more?
Christian