Fix Docker Image

[BojanZelic]

The existing docker image does not work for me, the app does not run;

I've been using this build successfully for a few months now; (my version was pushed to ghcr.io/bojanzelic/nodejs-poolcontroller-dashpanel)

this will setup a docker image to be pushed to ``ghcr.io/rstrouse/nodejs-poolcontroller-dashpanel`

will autocreate a new image on any new push;