[ISSUE-11] Adding support to run the web application via docker-compose

[apoclyps]

What's Changed

Adds support to run the application with docker using docker-compose.

Technical Description

Running the application with docker allows for new developers to the project to quickly get set up with a working environment (with the assumption they have docker installed) using the docker-compose up --build command.

• Replaced the Dockerfile with an updated version using Python 3.7.3
• Adds docker-compose.yml to allow the service to be run in a docker container
• Adds Pycharm .idea/ directory to gitignore file to avoid these files being committed
• Updates README with steps on how to start the application with docker

The application running within docker on http://localhost:8000:

Resolves #11 and opens #12

[tulikavijay]

Thankyou for working on this so fast!