How can I use Docker Compose with an Express app?

How can I use Docker Compose with an Express app?

You can use Docker Compose to define and run multi-container Docker applications. For an Express app, you'll need a docker-compose.yml file that specifies the services, including your Express app and any databases or other services it depends on.

What should my docker-compose.yml file look like?

Here's a basic example:

version: '3'
services:
  web:
    build: .
    ports:
      - '3000:3000'
    volumes:
      - .:/usr/src/app
    environment:
      NODE_ENV: development
  db:
    image: mongo
    ports:
      - '27017:27017'

How do I build and run the containers?

You can build and run the containers using the command docker-compose up --build. This will create the containers as defined in your docker-compose.yml file.

Can I add more services to this setup?

Absolutely! You can add more services by defining them in the docker-compose.yml file under the services section. Just make sure to configure the necessary ports and environment variables.