log_printer should handle Broken pipe

[VolkerK]

I'm using the following command in my shell script to wait for a docker container to startup
docker logs -f myContainer | grep -qe "Server startup complete"

When doing the same with compose, it still works, but I get this nasty Traceback.
docker-compose logs -f --no-color myContainer | grep -qe "Server startup complete"

Traceback (most recent call last):
File "", line 3, in
File "compose/cli/main.py", line 61, in main
File "compose/cli/main.py", line 113, in perform_command
File "compose/cli/main.py", line 507, in logs
File "compose/cli/log_printer.py", line 98, in run
IOError: [Errno 32] Broken pipe
docker-compose returned -1

Would be nice to handle that!
Thanks

$ docker-compose version
docker-compose version 1.8.0, build f3628c7
docker-py version: 1.9.0
CPython version: 2.7.9
OpenSSL version: OpenSSL 1.0.1e 11 Feb 2013

$ docker --version
Docker version 1.12.1, build 23cf638