implement Docker for project

[aimedivin]

What does this PR do?

This pull request introduces Docker support to our project both for the development and production environments.

Description of Task to be completed?

• Creation of Dockerfile
• The '.dockerfileignore' file lists files and folder that should not be included in image creation
• Configuration of Docker Compose
• Updated the README with instructions for using Docker.

How should this be manually tested?

• Ensure Docker is installed on your machine.
• Clone this repository and navigate to the project directory

  git clone https://github.com/atlp-rwanda/knights-ecomm-be.git
  cd knights-ecomm-be

• Build and start the Docker containers

  docker-compose up --build

• Access the application at the specified port
• Stop the Docker containers using

  docker-compose down

[coveralls]

Pull Request Test Coverage Report for Build 9319949833

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 76.608%

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Totals
Change from base Build 9308791086:	0.0%
Covered Lines:	1810
Relevant Lines:	2236

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💛 - Coveralls

[faid-terence]

@aimedivin Can you write a pull request for this ?