Docker Cloud - sleep necessary

[revett]

Context

• Just switched to running our Go apps as a static binary in a container based off sillelien/base-alpine.
• Apps are running in containers on Docker Cloud (Ubuntu 14.04 nodes).

Problem

• When one of our services starts, it attempts to connect to a RDS instance.
• This was timing out.

Solution

• Add a 20 second wait before trying to connect.

Logs

...

DNS : Starting monitoring loop
dial tcp xx.xx.xx.x:xxxx: getsockopt: connection timed out
/data-api exited 1