docker replica command

The "docker replica" command is not a valid Docker command. The closest command available in Docker is "docker service", which is used to create and manage Docker services.

A Docker service is a set of containers that run the same image and are created from the same task definition. The "docker service" command allows you to specify the number of replicas for a service, which determines how many instances of the service will be running at any given time.

Syntax:

docker service create [OPTIONS] IMAGE [COMMAND] [ARG...]

Example:

docker service create --name my-service --replicas 3 nginx

This command creates a new service called "my-service" that runs the "nginx" image with 3 replicas.