[Docker] stable tag does not point to 2.19.3

Updated to latest release, issue persist - but its not related to the web server. the whole deconz simply freezes. deconz ONLY (with phoscon plugin). The log froze too. I can tell its not the container, because the VNC connection works! the deconz windows is moveable by mouse but the contents are frozen. and so is the phsocon plugin.

I guess this is worth a new thread? I could do some more logging.