Refactor Dockerfile to streamline setup for local environment

[lalalaurentiu]

This pull request updates the Dockerfile to better support local development and running the application with Python dependencies. The most important changes include switching the base image to openjdk:8-jdk-alpine, setting up the working directory, copying project files, installing Python dependencies, and configuring the container to run the Django server.

Docker image and environment setup:

• Changed the base image from commented-out Python and Node images to openjdk:8-jdk-alpine, and ensured git is installed.
• Set the working directory to /scraper_Api for local environment usage.
• Copied all project files into the container for application setup.

Python/Django application configuration:

• Installed Python dependencies from requirements.txt using pip.
• Exposed port 8000 and set the default command to run Django migrations and start the development server.