Setup NFS database backup fails

I am trying to setup the NFS database backup but for some reason fails to connect to the NFS server. I setup a simple docker NFS server and linked it to the manageiq container. I am able to mount the NFS server directory from my host system. When starting the two containers I use for nfs.

I use for manageiq.

When set the scheduled db-backup I use the link value with the NFS share folder nfs:/nfs. The error I am getting in the logs states its could be a fs type. Is there a specific type of NFS server needed to use the NFS scheduled database backup?