Docker image with python 3.6 and opencv 3.3

Usage:

docker run -it jjanzic/docker-python3-opencv python
>>> import cv2

Image tagged with :contrib contains docker image built with contrib modules

List of available docker tags:

• opencv-3.3.0 (latest)
• contrib-opencv-3.3.0 (contrib)
• opencv-3.2.0
• contrib-opencv-3.2.0