ports for syncing

[eepstein]

don't you want ports 30303 / 30304 (UDP) to be opened.
and if you have sshd and port 22 do you also need/want 8545 ?

[blakeberg]

The udp ports will be opened if you start geth node inside the container but dont have to be exposed.
You will see in nohup.out logfile that the geth node is syncing with the network listening default port 30303. The geth JSON RPC default port 8545 is exposed for connecting it from outside the container.