Docker Compose is a tool for defining and running multi-container Docker applications using a YAML file to configure the services
. It is designed to work with Docker versions 1.27.0 and above, also known as Compose V2
. Compose is used in various environments, including production, staging, development, testing, and CI workflows
. Key features and use cases of Docker Compose include:
- Defining services : You can define the services that make up your application in a
compose.yamlfile, allowing them to be run together in an isolated environment
- Running the application : With a single command, you can create and start all the services from your configuration
- Managing the application lifecycle : Compose provides commands for starting, stopping, and rebuilding services, viewing the status of running services, streaming log output, and running one-off commands on a service
- Isolated environments : Compose allows you to have multiple isolated environments on a single host, preserving volume data when containers are created and only recreating containers that have changed
- Support for variables : You can use environment variables to customize the configuration for different environments, such as development, staging, and production
To use Docker Compose, you need to create a compose.yaml file that defines
the services, networks, and volumes for your Docker containers
. Once the file is created, you can run the docker compose up command to
start your application
. This command will start all the services defined in the compose.yaml file,
ensuring that your application is running correctly in an isolated environment
