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

6 Steps

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.