you need to learn Docker RIGHT NOW!! // Docker Containers 101

1. 1
   Create your Flask application files

   In a new directory, create `app.py` and `requirements.txt` with the provided Flask code and dependencies.
2. 2
   Define your Dockerfile

   Create a `Dockerfile` in the same directory. This file instructs Docker on how to build your application's image, including base image, dependencies, and execution command.
3. 3
   Build the Docker image

   Open your terminal in the directory containing your files and run the `docker build` command to create your application's image. The `-t` flag tags the image with a name.
4. 4
   Run the Docker container

   Launch your Flask application in an isolated container using the `docker run` command. The `-p 5000:5000` flag maps port 5000 from your host machine to port 5000 inside the container.
5. 5
   Access your application

   Open a web browser and navigate to `http://localhost:5000` to verify your Flask app is running inside the Docker container. You should see the 'Hello from Docker!' message.
6. 6
   Orchestrate with Docker Compose (Optional)

   For simplified multi-service management, create a `docker-compose.yml` file in your project root. This allows you to build and run your services with a single command.

FROM python:3.9-slim-buster
WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
EXPOSE 5000
CMD ["python", "app.py"]

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