Added Dockerfile and instructions for creating Docker image

[tlkh]

Hi everyone, I am a very inexperienced contributor so criticism is welcome. I noticed #12 but the status of that seems a little uncertain. Hence, I decided to give this a shot.

I'm proposing that we create a Dockerfile that will tackle OpenPose + Python bindings + GPU acceleration (CUDA), since this is a common configuration yet is more tricky to get right.

Here are the changes made in the commit:

• Added Dockerfile
• Building OpenPose with the Python bindings (something the other proposed Docker image lacks)
• Added folder for support files for building the Docker image
• Instructions outlined in a README in said folder
• A command + script that tests the import to ensure that it is working in the container.

I believe this is helpful, but if my contribution standard is not up to bar please do give any feedback or advice.

Thank you and have a nice day!

[gineshidalgo99]

Thanks! I won't be able to review it in the short run, but it is a welcome PR and I will eventually check it!

[esemeniuc]

I've made a much simpler image with a newer version of CUDA here: https://github.com/esemeniuc/openpose-docker
Its working with the python interface as well

[gineshidalgo99]

I will close this, but I have added a link to both of your Docker files in our doc/installation.md (will be pushed in the next commit), together with the many other Docker files people shared. Thanks for the help!

And feel free to post newer Dockerfiles in here, I will keep adding them to that file :)

[neonb88]

As of Wed Sep 4 04:41:10 UTC 2019, @esemeniuc 's docker implementation is giving me the error

Starting OpenPose demo...
Configuring OpenPose...
Starting thread(s)...
Auto-detecting all available GPUs... Detected 1 GPU(s), using 1 of them starting at GPU 0.
./build/examples/openpose/openpose.bin: symbol lookup error: /openpose/build/src/openpose/libopenpose.so.1.4.0: undefined symbol: _ZN5caffe3NetIfE21CopyTrainedLayersFromERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE

I believe this is an issue with Ubuntu 18.04 due to the comment here, but I'm not 100% sure. If anyone tries his docker image and manages to fix the issue, please let me know.

There might be a way to find a proper version of that shared object file libopenpose.so.1.4.0 and make OpenPose work on esemeniuc's docker, but I don't know what it is. Again, please notify the rest of the internet if you find a solution

Cheers,
Nathan

[kjacks21]

@neonb88 what did you run to cause the issue? I used the cwaffles/openpose-python image via the following command listed on the Docker page

docker run -it --rm --runtime=nvidia -e NVIDIA_VISIBLE_DEVICES=0 cwaffles/openpose-python

And was able to run the openpose demo without displaying a video (necessary or else you'll get an Unable to init server: Could not connect: Connection refused error).