proper error logging in the docker image

[Dieterbe]

While testing my custom finder, I can make gunicorn return "500 Internal Server Error" by doing requests to /render and /metrics/find

i use the image as per https://index.docker.io/u/brutasse/graphite-api/,
and hence run gunicorn -b 0.0.0.0:8000 -w 2 --log-level debug graphite_api.app:app
but it only logs https://gist.github.com/Dieterbe/10199015 i don't get anything more.
nothing on the terminal, no logfiles :(
i want to see why it errors, if there's any python errors and stack dumps, etc.

[crossjam]

I had to add

logging:
  disable_existing_loggers: false

to my graphite-api.yaml config due to the way Python configures logging:
https://docs.python.org/2/library/logging.config.html

I don't think there's any way to change this setting from the command line although I didn't dig too hard.

[Dieterbe]

ping @brutasse ? besides stdout/logfiles, the ability to see the error in the http response from graphite-api would be great too.

[brutasse]

Done in b7571fe, at last :)