added docker socket proxy to manual install

[sheikhmishar]

I've added and tested docker-socket-proxy for the manual installation of AIO. This will be useful for using AppAPI and ExApp for manual mode users

[szaimen]

Hi @sheikhmishar, thanks a lot for your contribution!

We could think about adding the docker-socket-proxy container but then the question remains why you are using the manual install if a container having access to the docker socket that also creates additonal containers is apparently not a problem for you?

Regarding adding community containers, I fear this is out of scope since they rely on some custom config which is only possible to be used in a sensible way when using the mastercontainer like e.g. aio_variables or nextcloud_exec_commands. We also might add more later on.