Dockers

Dockers 101 – Series 2 of N – Using Dockerfile to Run a Tic Tac Toe Game in Python

Requirement: To run a Tic Tack Toe  which is written in Python Strategy: Docker uses a Dockerfile to define what all will be going in a container For […]

More Blogs View Experience
IDE with CMS templates on screen Sitecore Notes by Topic doc.sitecore.com Network cables and server lights AWS War Stories docs.aws.amazon.com Code and data on a dark screen Spark & Cloudera Digests Spark / Cloudera docs Robotic hand and human hand nearly touching SMB Column · EZ4YouTech.com EZ4YouTech.com editorial
Mohd Naeem
  • Requirement:
    • To run a Tic Tack Toe  which is written in Python
  • Strategy:
    • Docker uses a Dockerfile to define what all will be going in a container
    • For above requirement we need the following:
      • a Python runtime
      • a working directory with the Python file
      • a command to execute the Python file
      • build the app
      • push the container to Docker Hub( you will need to create Docker Hub account and a repository under the account, Please visit hub.docker.com)
      • pull the image 
      • run the container
  • Solution:
    • Login to your Host machine(in my case a CentOS 7 machine)
    • Make a directory “TicTackToe” and go to the directory – mkdir TicTackToe && cd TicTackToe
    • Download my Python Tic Tack Toe game from here – wget https://testbucket786786.s3.amazonaws.com/python/TictacToe.py
    • Capture
    • Now create a Dockerfile and copy the following content into it – nano Dockerfile
    • Copy following content into the Dockerfile and save:
    • The docker file has self explanatory explanations as what it is doing:
    • # Use an official Python runtime as a parent image
FROM python:2.7-slim # Set the working directory to /app
WORKDIR /app # Copy the current directory contents into the container at /app
ADD . /app # Run TicTacToe.py when the container launches
CMD ["python", "TicTacToe.py"]
    • Capture
    • Now build the app(naeemstictactoelatest  is the image name you want for this app)- docker build -t naeemstictactoelatest .
    • Capture
    • Now check for the image name for your app and tag it for pushing it to Docker Hub
      • docker images # to check for image name
      • docker tag image username/repository:tag # for tagging
      • docker login # to login to the Docker hub
    • Now push the image to Docker Hub
      • docker push mnaeemsiddiqui/naeemsrepo:naeemstictactoelatest
    • Capture
    • Now that you have a docker image on docker hub, you can
      • pull the docker image – docker pull mnaeemsiddiqui/naeemsrepo:naeemstictactoelatest
      • to run your app – docker run -it mnaeemsiddiqui/naeemsrepo:naeemstictactoelatest
    • Capture
    • Yay!!, you containerized your app and pushed it to docker hub and pulled that image and ran the container to run your application.