Docker image for opencv2, python, numpy, matplotlib and other libraries

The docker image contains:

• OpenCV 2.4.13.3
• Python 2.7
• Numpy
• Matplotlib
• Pillow
• Virtualenv

Please check the requirements.txt for other libraries which get installed while running the Dockerfile and make changes to install more libraries

This Dockerfile is based on the official docker Python image and contains the bash script commands to install OpenCV which have been taken from here. The commands have been altered a little to install the above mentioned libraries.

Instructions to install any library using Dockerfile

To install any library, search the linux bash installation method for that library. Just paste the commands which you'd execute sequentially on a linux bash shell for installation, inside the Dockerfile. Check out the Dockerfile in this repository to see how to paste the bash commands.

To test the docker image run the following command:

docker run -it hulkinbrain/docker-opencv2 bash

And to test the installed libraries, run the following commands after running the above command:
OpenCV installation is being checked by the following commands

# python
>>> import cv2
>>> print cv2.__version__
2.4.13.3

Extra information for those looking to deploy Docker images for their heroku webapps

For example if you want to deploy a Django based webapp using this Docker image, follow the below instructions:

• Clone this repository to your local environment

• Copy your project folder into the cloned repository

• Change the following lines of the Dockerfile:

  ADD ./yourProjectFolder /opt/yourProjectFolder/
  WORKDIR /opt/yourProjectFolder
  
  # Assuming yourProjectFolder contains manage.py run the following command to start the server
  
  CMD python manage.py runserver 0.0.0.0:$PORT
  

• Push the updated repository to github

• Go to your docker account and create an automatic build by linking your github account and selecting your repository to Docker. Docker will build an image after 2-3 mintues on its own, it the building doesnt start make a small change in the readme.md file. This will trigger the building.

• After the image gets created, Run the following commands in the CLI to deploy your webapp along with the Dockerimage:

  heroku container:login
  
  heroku create yourAppName
  
  heroku container:push web
  
  heroku open
  

Now your webapp will open on your browser