Which command would you use to start all services defined in a Docker Compose file?

To initiate all services defined in a Docker Compose file, the command docker compose up is utilized. This command reads the configuration from the docker-compose.yml file and starts the containers as specified within that file. It ensures that all services, including any dependencies between them, are started in the correct order and with the appropriate settings.

When executed, docker compose up will build images if they do not already exist, create the containers, and then start them. This command is fundamental in working with Docker Compose, as it encapsulates the entire multi-container environment in a simple command, streamlining the process of managing multiple containers that are required for an application.

The other commands listed do not serve the purpose of starting services as defined in a Docker Compose file. For instance, docker run is used to start a single container from an image, while docker start is intended for starting already created containers. docker deploy, on the other hand, is not a standard Docker command and does not pertain to the workflow of Docker Compose. Thus, using docker compose up is specifically aimed at managing the full scope of services within the defined Docker Compose ecosystem.