bump docker-mock

Author: Bryan Kendall

package.json

@@ -81,7 +81,7 @@
     "Filibuster": "git://github.com/Runnable/Filibuster.git#v0.1.4",
     "console-trace": "git://github.com/numbcoder/console-trace.git",
     "docker-listener": "git+ssh://git@github.com:codenow/docker-listener#v0.1.1",
-    "docker-mock": "git://github.com/Runnable/docker-mock.git#v0.5.4",
+    "docker-mock": "^0.5.5",
     "faker": "^1.0.0",
     "form-data": "^0.1.4",
     "function-proxy": "^0.5.1",