The line above seems to be the root problem @wincenworks
I cannot tell you what to do, but if I were you @wincenworks , I would install Discourse from scratch; and before building the container, I would set your template(s) to use PG10.
Then after you get that new instance up and running, then you can try to restore your Discourse instance from your current PG10 backup, from the command line (not the UI) inside your container.
HTH.