Make to_shellwords idempotent in DockerContainer
Make to_shellwords idempotent in DockerContainer

Fix undefined method `scan' for
["nc", "-ll", "-p", "7", "-e", "/bin/cat"]:Array from smoke test.

Signed-off-by: Samuel Bernard <b70482a9c35b236639019cd8b2ecb03a9ee7db09@make.org>

chef-cookbooks/docker,chef-cookbooks/docker,chef-cookbooks/docker