docker: set `DBUS_SESSION_BUS_ADDRESS` so that it uses remote TCP with local fallback: When connecting to Docker service, first the `backend` container will be tried with TCP, then an Unix Socket will be used as fallback. The Unix Socket is put in Libervia local dir which is a volume shared between containers. This way D-Bus can be used with a remote backend, or the backend can be run locally (notably during build when accounts creation or other settings must be done via Libervia CLI).

include MANIFEST.in sat/VERSION
global-include *.py
global-include *.ini
global-include *.po *.mo
global-include CHANGELOG COPYING* INSTALL README*
global-include *.sh
global-include *.yml *.yaml
global-include Makefile *.rst *.bat
graft misc
graft doc
include sat_frontends/jp/jp sat_frontends/primitivus/primitivus
include sat/bridge/bridge_constructor
global-exclude *.un~
prune sat/bridge/bridge_constructor/generated