This repository contains a Django Todo App that can be easily containerized using Docker Compose. The Docker Compose configuration allows you to run both the Django Todo App and a MySQL database within separate containers.

Before getting started, ensure that you have the following prerequisites installed on your machine:

• Docker
• Docker Compose

Steps to Dockerize the Todo App using Docker Compose:

1. Clone this repository to your local machine:

   git clone <repository_url>

2. Create the docker-compose.yml file in the root directory and add configuration.

   (Here, it sets up a MySQL container along with the Django Todo App container. We will deep dive into this to understand a docker-compose file and it's configurations)

3. Build and run the containers using Docker Compose:

   docker-compose up

version: "3.9"
services: 
 django_todo_app:
  container_name: "django-todo-app"
  build : .
  ports:
    - 8000:8000
  volumes:
    - django_todo_volume:/app
 mysql_db:
  container_name: "django-mysql-db"
  image: mysql:5.7
  ports:
    - 3306:3306
  environment:
    MYSQL_ROOT_PASSWORD: "test@123"
volumes:
 django_todo_volume:

In version, we have to mention the version of language which you are using in your application. As django todo app is a python application I have mentioned python version 3.9

Under services we specify the services which we have to run (there can be one or multiple services)

1. django_todo_app: This is todo application where I have code base. Inside this I have specified its related commands & specifications. Let's look into it.

   container_name: Give name to your container. Here I have given container name as django-todo-app

   build: This builds or rebuild image & add all configs for the services to create a container.

   ports: Specify on which port you want to run service. It binds local port to remote server port. I am running my django todo service on 8000 and binding same to run on server.

   volumes: Bind volume for the container of service.

2. mysql_db: Adding a service for mySQL database.

   container_name: Specify container name for service.

   image: It will pull MySQL image with 5.7 tag from dockerhub.

   ports: By default, mySQL run on port 3306, hence binding same to the server.

   environment: Here we have to pass environment variable like mySQL password.

   MYSQL_ROOT_PASSWORD: "your_password"

Declare volume which will get bind to the service.

Now, with the below command, you are now ready to build and execute your docker-compose.yml, It creates containers for mentioned services.

docker-compose up

You can run in detached mode by adding -d flag.

docker-compose up -d

After all, You can check all your running containers with

docker ps