Endpoints AppEngine Flex sample doesn't deploy

[wmwong]

In which file did you encounter the issue?

endpoints/getting-started

Did you change the file? If so, how?

I followed the Quickstart guide:
https://cloud.google.com/endpoints/docs/quickstart-app-engine

Describe the issue

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 12.453 s
[INFO] Finished at: 2017-03-27T13:26:34-07:00
[INFO] Final Memory: 30M/485M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.google.cloud.tools:appengine-maven-plugin:1.0.0:deploy (default-cli) on project endpoints: Execution default-cli of goal com.google.cloud.tools:appengine-maven-plugin:1.0.0:deploy failed: Found 'Dockerfile' in the App Engine directory. Please move it to the Docker directory. -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

[wmwong]

#585