Which command is typically used to create and start a new Docker container?

Which command is typically used to create and start a new Docker container?

• A. docker create
• B. docker build
• C. docker run
• D. docker start

Answer: (C)

The command used to create and start a new Docker container is indeed "docker run." This command performs both actions simultaneously: it creates a new container from a specified image and starts it immediately. When you execute "docker run," it checks for the specified image on your local machine; if it's not present, it will pull the image from a Docker registry. This command is fundamental in Docker since it allows users to quickly instantiate applications and services in isolated environments. Using "docker create" would only create the container but not start it, leaving the container in a stopped state. "Docker build" is utilized to build Docker images from a Dockerfile and is not related to container creation or starting directly. Lastly, "docker start" is used to start existing containers that are already created but have been stopped; it cannot be utilized to create new containers. Therefore, "docker run" is the command that encompasses both container creation and startup, making it the correct answer in this context.

The command used to create and start a new Docker container is indeed "docker run." This command performs both actions simultaneously: it creates a new container from a specified image and starts it immediately. When you execute "docker run," it checks for the specified image on your local machine; if it's not present, it will pull the image from a Docker registry. This command is fundamental in Docker since it allows users to quickly instantiate applications and services in isolated environments.

Using "docker create" would only create the container but not start it, leaving the container in a stopped state. "Docker build" is utilized to build Docker images from a Dockerfile and is not related to container creation or starting directly. Lastly, "docker start" is used to start existing containers that are already created but have been stopped; it cannot be utilized to create new containers. Therefore, "docker run" is the command that encompasses both container creation and startup, making it the correct answer in this context.