Failed to open connector

[pzauner]

when starting the container it won't come up and terminates after ca. 40 seconds.

Checking the logs via docker container logs -f <container-id> returns above error for the openid connector for the google sign-in.

info [grist-omnibus] Checking dex... at https://<masked-domain>/dex/.well-known/openid-configuration failed to initialize server: server: Failed to open connector google: failed to open connector: failed to create connector google: failed to get provider: Get "https://accounts.google.com/.well-known/openid-configuration": dial tcp: lookup accounts.google.com: i/o timeout error [grist-omnibus] dex failed: exited with 2

Is there some check for just doing this in IPv4? Because I don't have any, but pinging works just fine:

ping -6 accounts.google.com

PING accounts.google.com(lo-in-x54.1e100.net (2a00:1450:4010:c0b::54)) 56 data bytes
64 bytes from lo-in-f84.1e100.net (2a00:1450:4010:c0b::54): icmp_seq=1 ttl=111 time=30.1 ms