Following instructions at https://github.com/juliushaertl/nextcloud-docker-dev and from Tutorial: How to set up a Nextcloud development environment on Mac or Ubuntu?
$ docker-compose up nextcloud proxy WARNING: The PRIMARY variable is not set. Defaulting to a blank string. Creating network "master_default" with the default driver ERROR: Pool overlaps with other one on this address space
There are no other containers on this machine, and I’m happy to destroy/recreate anything related to docker and compose files.
$ docker network ls NETWORK ID NAME DRIVER SCOPE 5d3111537af7 bridge bridge local 04d3ca5d2871 host host local c4095b8670cd nextcloud_default bridge local a0e9a2310258 none null local