Containers for Messenger client / server

[olemis]

Run Messenger server in Docker container .

[olemis]

@stdevMauricio working on this .

[stdevMauricio]

While working on this issue I found the following compile error.

# github.com/skycoin/net/skycoin-messenger/op
skycoin-messenger/op/login.go:39:9: cannot assign 1 values to 2 variables