Support for generic TCP VHOSTs

[fancyremarker]

No description provided.

[cancan101]

Because of: moby/moby#11185 if you are using Docker >= 1.7, I would suggest starting the daemon with --userland-proxy=false as it significantly reduces RAM usage.

Further, per: https://docs.docker.com/v1.7/articles/networking/#binding-container-ports-to-the-host:

When disabled, Docker uses both an additional MASQUERADE iptable rule and the net.ipv4.route_localnet kernel parameter which allow the host machine to connect to a local container exposed port through the commonly used loopback address: this alternative is preferred for performance reason.

[fancyremarker]

See https://www.aptible.com/documentation/enclave/reference/apps/endpoints/tcp-endpoints.html