Added functionality for Docker images to be run

[bfleming2]

Description: I have added a Dockerfile that can now build Docker images for this repository. I added these changes to make this application more portable and to simplify the collaboration of this project moving forward in the future.

Link to the Issue: Fixes Issue #10

Testing Steps: You can test this Dockerized solution by building the Docker image with the command: docker build -t cyber-typer-app .

Run the Docker image with the command (on Port 3000): docker run -p 3000:3000 cyber-typer-app

Happy Testing and Good Luck in the Future!