ERROR: Failed building wheel for opencv-python

[Cow0horse]

Thanks for your error report and we appreciate it a lot.

Checklist

1. I have searched related issues but cannot get the expected help.
2. The bug has not been fixed in the latest version.

Describe the bug When I run ""sudo docker build . -t pedestron"", I got the error """ ERROR: Could not build wheels for opencv-python which use PEP 517 and cannot be installed directly"""

Reproduction

1. What command or script did you run?

   A placeholder for the command.

2. Did you make any modifications on the code or config? Did you understand what you have modified?
3. What dataset did you use?

Environment

• OS: [e.g., Ubuntu 16.04.6]
• GCC [e.g., 5.4.0]
• PyTorch version [1.4.0]
  • How you installed PyTorch [e.g., pip, conda, source]
  • GPU model [e.g., 2080Ti]
  • CUDA and CUDNN version
  • [optional] Other information that may be related (such as $PATH, $LD_LIBRARY_PATH, $PYTHONPATH, etc.)

Error traceback If applicable, paste the error trackback here.

A placeholder for trackback.

Bug fix If you have already identified the reason, you can provide the information here. If you are willing to create a PR to fix it, please also leave a comment here and that would be much appreciated!

[hasanirtiza]

Its an issue with docker and personally I have not tried the docker with mmdetection. A quick google search reveals this.