Update documentation for docker

[chompomonim]

In docker related documentation we should describe how to specify a range of ports which we can map and use for NAT pinging. This should fix most of the cases of #1599.

Also mention in the documentation that docker support in a local network is experimental and may not work in all cases.

[Waldz]

1. Start node with

• turn off automapping port mapping
• turn off port nat hole punching
• map container ports manually

docker run --cap-add NET_ADMIN -p 24000:24000/udp -p 4449:4449 \
           -v ~/.mysterium/keystore:/var/lib/mysterium-node \
           --name myst \
           --rm mysteriumnetwork/myst \
           --experiment-natpunching=false \
           --nat-port-mapping=false service \
           --agreed-terms-and-conditions \
           --openvpn.port=24000

2. In router map virtual server manually: from router 88.119.191.24 -> you local network machine 10.0.88.153 on your chosen very custom port
3. Debugging:

# Don't forget to start you container with TCP protocol `--openvpn.proto=tcp`
telnet localhost 24000
telent 10.0.88.153 24000
telnet 88.119.191.24 24000

[etherunit]

published article https://help.mysterium.network/en/articles/3777670-running-your-node-on-a-docker

[chompomonim]

Cool!

Can we also mention wireguard setup? Or wireguard is not supported in our docker images ATM?

[zolia]

Don't forget to start you container with TCP protocol --openvpn.proto=tcp

this should be needed only if you want to test whether your port mapping configuration works. Service itself and port mapping should be run on UDP protocol thus for production
--openvpn.proto=tcp should not be needed.

[zolia]

Also, with recent NAT changes there should be no need to run such port mapping configuration at all. Documentation should clearly state that such configuration should only be used if client has strict firewall configuration rules and wants to control all access through firewall.

[ignasbernotas]

Instructions added for static port. Will update once another solution is possible.