Docker Compose I

• Docker Compose is a tool for running multi-container applications. All containers work together. Using the YAML file you can configure your application’s services. With a single command, you can start and stop your entire applications and services.
• Install Docker Compose on macOS, Windows, and 64-bit Linux. Refer to https://docs.docker.com/compose/install/ steps for installations.
• Basic three steps to start the application using docker-compose:

- Create dockerfiles with your app's environment.

- Add configuration of your application’s services in docker-compose.yml, so they can be run together in an isolated environment. You can use either a .yml or .yaml extension for this file. They both work.

- Run docker compose up or docker-compose up and runs your entire app.

• Benefits of Docker Compose:

- You can deploy everything on a single host.

- Easy configuration due to YAML scripts.

- All the containers are isolated from each other.

• Basic Commands in Docker Compose:

- docker-compose up: Create and start containers

- docker-compose start/stop: Start/Stop services

- docker-compose build: Build or rebuild services

- docker-compose bundle: Generate a Docker bundle from the Compose file

- docker-compose config: Validate and view the Compose file

- docker-compose scale: Set number of containers for a service

- docker-compose down: Stop and remove containers, networks, images, and volumes

For more CLI options check https://docs.docker.com/compose/reference/.

Next: Stay tuned for details about Docker-compose files and configurations, in the upcoming blog will be setting up a web service by using docker-compose.yaml.

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