e2e: Add an outgoing_bind= conf option

Use AI_NUMERICHOST when using getaddrinfo to bind() our client sockets

Remove the sonar-qube build

[ci skip]

Add a test for the ad-hoc command disconnect-from-irc-server

Also test the channel config on a fixed_irc_server instance

Split the biboumi dockerfile into two, to be able to disable the cache

Add a irc channel ad-hoc configure test

Use uname() instead of CMAKE_SYSTEM

fix #3235

docker: fix the SECRET->PASSWORD in entrypoint.sh

docker: Add the XMPP_SERVER_IP option, and document the --network=host usage

docker: Properly handle and document the /var/lib/biboumi directory

ci: remove all mention of docker.io in packaging:docker

ci: Empty the before_script for the packaging:docker job

ci: Add a packaging:docker job that builds and push to the image docker.io

Add a biboumi Dockerfile

Only call freeaddrinfo if an actual addrinfo struct has been allocated

Add missing include

Fix a leak on getaddrinfo, thank you LeakSanitizer!

Surround ipv6 with [], and properly cleanup otherwise invalid domains

fix #2694 (yeah, it was closed, but it was badly fixed)

Little scopeguard cleanup, and add a test