Dockerize the app

[cbhat5]

Readme contains lot of steps which can be dockerized.

[yashdotdev13]

Hi @cbhat5,

I'd like to contribute to this issue.

I noticed that the repository now already contains Dockerfiles for the backend/frontend and a docker-compose setup including MySQL.

However, the current Docker setup appears to use outdated base images and could use some modernization and reliability improvements. I'd like to work on improving the existing Docker setup rather than duplicating the existing Dockerization work.

My plan is to:

• update the backend Docker image to match the Java version required by the project
• modernize the frontend Docker image
• update the MySQL image
• improve the docker-compose service startup/health configuration
• update the README with the current Docker workflow

If this direction looks good, I'd be happy to work on it and submit a PR linked to this issue.