Docker containerization in Django - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Docker containerization?

Docker containerization is a way to package an application and all its parts, like code and libraries, into a single unit called a container. This container runs the same way on any computer, making it easy to share and deploy apps.

beginner

Why use Docker with a Django project?

Using Docker with Django helps keep your app and its environment consistent everywhere. It makes setup easier, avoids "it works on my machine" problems, and helps when deploying to servers or cloud.

intermediate

What is a Dockerfile in the context of Django?

A Dockerfile is a text file with instructions to build a Docker image. For Django, it usually tells Docker how to install Python, copy your code, install dependencies, and run the app inside a container.

intermediate

How does Docker Compose help with Django projects?

Docker Compose lets you run multiple containers together, like Django app, database, and cache. It uses a simple file to define all parts, so you can start everything with one command.

beginner

What is the difference between a Docker image and a Docker container?

A Docker image is like a recipe or blueprint for your app. A container is the running instance made from that image. You can make many containers from one image.

What does a Dockerfile do in a Django project?

A Defines how to build the Docker image for the Django app

B Runs the Django server directly

C Stores the Django database data

D Manages user authentication in Django

A Dockerfile contains instructions to build the Docker image, including installing Python, copying code, and setting up the environment.

Which command starts all services defined in a Docker Compose file?

A docker build

B docker start

C docker run

D docker-compose up

The command 'docker-compose up' starts all containers defined in the docker-compose.yml file together.

Why is containerization useful for Django development?

A It automatically writes Django code

B It replaces the need for a database

C It ensures the app runs the same on any machine

D It makes the app run faster than native code

Containerization packages the app and environment so it behaves consistently everywhere.

What is the main difference between a Docker image and a container?

A Image is the blueprint; container is the running app

B Image runs the app; container stores code

C Image is temporary; container is permanent

D Image is only for databases; container is for apps

An image is a static file with instructions; a container is a live instance created from that image.

Which file typically defines multiple containers for a Django app and its database?

A requirements.txt

B docker-compose.yml

C Dockerfile

D settings.py

The docker-compose.yml file defines multiple services like Django app and database containers.

Explain how Docker containerization helps in deploying a Django application.

Think about how Docker packages everything needed to run your app.

Describe the role of Docker Compose in managing a Django project with a database.

Consider how you run both app and database with one command.