As far as I know Zero Tier needs extra settings to rout all traffic through VPN server in my home. There are some articles how to set it, but I didn’t find even one how to set it using Zero Tier in docker. Especially on Synology server.
The point is to route all traffic through the VPN server. Connecting with computers in the same Zero Tier network is not the issue.
*route all traffics - means if I use phone / notebook the connection to https://example.com go like notebook <-> server in home <-> https://example.com and this is the point and I didn’t find article how to achieve it using docker on Synology.
PS there is no other way to run Zero Tier on Synology as a plugin / application. Only one way is to run it as a docker.
I’m not a network management expert and I don’t even know if you can get what you want from zerotier on synology. But I know you can manage the zerotier installation in the docker by connecting via the ssh terminal and then using commands like “docker exec -it zt zerotier-cli …”
I don’t know if it will be useful to you …