Docs: Add Docker documentation for starting and managing containers

docs/docker.md

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+# How to Start Docker for Django Backend
+This guide will cover the steps needed to get The TutorAI environment set up using Docker.
+
+## Prerequisites
+Before you begin, ensure that you have the following installed:
+
+- [Docker](https://docs.docker.com/get-docker/)
+- [Docker Compose](https://docs.docker.com/compose/install/)
+
+These tools are required to create your containerized environment.
+
+## Steps to Start Docker
+Navigate to the root of the project where the `docker-compose.yml` file is located.
+
+Then run the following commands to build and start your Docker containers:
+
+```bash
+docker compose build # This command builds the Docker images defined in your docker-compose.yml file.
+docker compose up    # This command starts the containers in the foreground. Add -d to run them in the background.
+```
+
+After running docker-compose up, your Django application should be accessible via `http://localhost:8000` or another port specified in your Docker configuration.
+
+To stop your Docker containers, you can use:
+
+```bash
+docker compose down
+```
+
+To view the status of your Docker containers, you can use:
+```bash
+docker ps
+```
+
+## Running Django Commands
+To run Django commands, you can use the following command:
+
+```bash
+docker compose run tutorai python manage.py <command>
+```
+
+Replace `<command>` with the Django command you want to run.
+So to run tests, you can use:
+
+```bash
+docker compose run tutorai python manage.py test
+```
+
+### Running Django Migrations
+To run Django migrations, you can use the following command:
+
+```bash
+docker compose run tutorai python manage.py makemigration
+docker compose run tutorai python manage.py migrate
+```