Docker container error on example.ipynb

[robmarkcole]

Hi
running the Docker container and following 01_Example.ipynb, I immediately hit the following error and the kernel dies:

[E 08:53:41.324 NotebookApp] 500 POST /api/kernels/4d3b35a2-ebc1-41a6-8e89-8f2aa40ef632/restart (172.17.0.1) 31048.51ms referer=http://localhost:8888/notebooks/Geonotebook/01_Example.ipynb
ERROR:tornado.general:Uncaught exception in ZMQStream callback
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/zmq/eventloop/zmqstream.py", line 432, in _run_callback
    callback(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/tornado/stack_context.py", line 277, in null_wrapper
    return fn(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/ipykernel/kernelbase.py", line 276, in dispatcher
    return self.dispatch_shell(stream, msg)
  File "/usr/local/lib/python2.7/dist-packages/ipykernel/kernelbase.py", line 226, in dispatch_shell
    self.pre_handler_hook()
  File "/usr/local/lib/python2.7/dist-packages/ipykernel/kernelbase.py", line 241, in pre_handler_hook
    self.saved_sigint_handler = signal(SIGINT, default_int_handler)

[weatherlym663]

I'm getting the same error.
I built the container with
docker build -t geonotebook .
and then once that completed with no errors i ran: docker run -p 8888:8888 -v /path/to/your/notebooks:/notebooks -it --rm geonotebook

and i replaced /path/to/your/notebooks with the examples director included and i almost immediately get the same error as above with the same notebook. I also get the same error with every example notebook included

[I 18:17:10.953 NotebookApp] Kernel started: ea99b416-431d-40bf-b2d1-e6189c16dd54
ERROR:tornado.general:Uncaught exception in ZMQStream callback
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/zmq/eventloop/zmqstream.py", line 432, in _run_callback
    callback(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/tornado/stack_context.py", line 277, in null_wrapper
    return fn(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/ipykernel/kernelbase.py", line 276, in dispatcher
    return self.dispatch_shell(stream, msg)
  File "/usr/local/lib/python2.7/dist-packages/ipykernel/kernelbase.py", line 226, in dispatch_shell
    self.pre_handler_hook()
  File "/usr/local/lib/python2.7/dist-packages/ipykernel/kernelbase.py", line 241, in pre_handler_hook
    self.saved_sigint_handler = signal(SIGINT, default_int_handler)
ValueError: signal only works in main thread

[weatherlym663]

a work around for the error is to pull the image directly from docker hub

[syncharny]

I downloaded from docker hub and still got this error:

ERROR:tornado.general:Uncaught exception in ZMQStream callback
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/zmq/eventloop/zmqstream.py", line 432, in _run_callback
    callback(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/tornado/stack_context.py", line 277, in null_wrapper
    return fn(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/ipykernel/kernelbase.py", line 276, in dispatcher
    return self.dispatch_shell(stream, msg)
  File "/usr/local/lib/python2.7/dist-packages/ipykernel/kernelbase.py", line 226, in dispatch_shell
    self.pre_handler_hook()
  File "/usr/local/lib/python2.7/dist-packages/ipykernel/kernelbase.py", line 241, in pre_handler_hook
    self.saved_sigint_handler = signal(SIGINT, default_int_handler)
ValueError: signal only works in main thread