Hello @Slewrate,
I also use Synology and DSM 7 and had exactly the same error as you. → Docker 1.50.4 restarts many times after "unable to resolve host address 'version.storj.io'" - #3 by sembeth
It is recommended in the documentation to use “–restart unless-stopped”. → Storage Node | Storj Docs
So some of my storagenodes could not resolve the DNS and stopped automatically every time. Due to the “–restart unless-stopped” they automatically restarted and finally after a few restarts they were able to resolve and download the updater and storagenode binaries and it worked.
I’m not sure if it has something to do with our DNS or Synology. I use Cloudflare (1.1.1.1) as DNS Server.