Run two instances of same wikijs

I want to run a wikijs docker installed on two unraid servers. I need to be able to axs either of the instances should the other unraid server be unavailable.

I have written a script to dump the master database and copy it and the local data files to the secondary server. Then restore that to the second server

My question is could I setup Postgres replication to make both sites “live” but also sync the local data files say using synthing?

Is this realistic?