File Structure of docker-compose.yml File

The structure of a docker-compose.yml file typically follows a hierarchical format using YAML syntax. Here's a breakdown of the common sections and their respective components:

1. Version: This is the version of the Docker Compose file format you’re using. It’s typically at the top of the file and specifies which features and syntax are available for use.

For example:

version: '3.8'

2. Services: This section defines the various services or containers that make up your application. Each service is listed under the services keyword and has its own configuration.

Here's an example:

services:
  web:
    image: nginx:latest
    ports:
      - "8080:80"
  database:
    image: postgres:latest
    environment:
      POSTGRES_USER: myuser
      POSTGRES_PASSWORD: mypassword

3. Networks: This section allows you to define custom networks for your services. Networks enable containers to communicate with each other over isolated networks. You can specify network configurations such as aliases, IP addresses, and external connectivity.

For example:

networks:
  my_network:
    driver: bridge