ImportError: libGL.so.1: cannot open shared object file: No such file or directory
RUN apt-get update ##[edited]RUN apt-get install ffmpeg libsm6 libxext6 -yAdd these lines to your Dockerfile
This is a little bit better solution in my opinion. Package python3-opencv includes all system dependencies of OpenCV.
RUN apt-get update && apt-get install -y python3-opencvRUN pip install opencv-python
Even though the above solutions work. But their package sizes are quite big.libGL.so.1 is provided by package libgl1. So the following code is sufficient.
apt-get update && apt-get install libgl1