Only use systemd for the deploy entrypoint

On my system the deploy container does not have Apache 2 and rsync running or at least they are not seen in the container. I suspect systemd somehow kills the one that got started from entrypoint.sh. Additionally the units are flagged as failling.

I haven't investigated too far since I noticed in 9e8e88a7, sshd got moved out of the entrypoint.sh since systemd spawns it. I have removed rsync and apache2ctl and systemd successfully start them. As a result, we can use systemd as the sole entry point and let it do its work.