So gateway refers to where to find the DHCP server?
So gateway refers to where to find the DHCP server?
Your router is the gateway to the internet. I could be wrong here, but this is why your devices can see it. They need to know where they can access the internet.
It’s been a while since I set it up, but from memory my mount point was set to be owned by root and immutable. That stopped any of my docker containers making new files and folders if the mounted drive or network location was not mounted or unavailable.