What are some examples of using Docker Compose?

What are some examples of using Docker Compose?

Docker Compose is a tool for defining and running multi-container Docker applications. Here are a few examples:

1. Web Application: You can define a web app with a frontend, backend, and database services.
2. Microservices: Use Docker Compose to manage multiple microservices that communicate with each other.
3. Development Environment: Set up a local development environment with all necessary services like Redis, MongoDB, etc.

Can you show me a sample docker-compose.yml file?

Sure! Here's a simple example of a docker-compose.yml file for a web application:

version: '3'
services:
  web:
    image: nginx:latest
    ports:
      - "80:80"
  db:
    image: postgres:latest
    environment:
      POSTGRES_DB: exampledb
      POSTGRES_USER: user
      POSTGRES_PASSWORD: password

How do I run this Docker Compose file?

To run the Docker Compose file, navigate to the directory containing the docker-compose.yml file and execute the command:

docker-compose up

This will start all the services defined in the file.

What if I want to stop the services?

You can stop the services by running:

docker-compose down

This command will stop and remove the containers defined in your docker-compose.yml.