How can I set up an advanced Docker Compose configuration for Travis CI?

How can I set up an advanced Docker Compose configuration for Travis CI?

To set up an advanced Docker Compose configuration for Travis CI, you can define services in your docker-compose.yml file. What specific features do you want to implement?

I want to use multiple services and set environment variables.

You can define multiple services in your docker-compose.yml like this:

version: '3'
services:
  app:
    image: your-app-image
    environment:
      - ENV_VAR=value
  db:
    image: postgres
    environment:
      - POSTGRES_USER=user
      - POSTGRES_PASSWORD=pass

This sets up an app and a database service with environment variables.

How do I link these services together?

You can link services by using the service name as the hostname. For example, in your app, you can connect to the database using db as the hostname.

What about using volumes for persistent data?

You can add volumes to your services like this:

  db:
    volumes:
      - db_data:/var/lib/postgresql/data
volumes:
  db_data:

This will ensure that your database data persists even when the container is recreated.