Which command is used to create a new Docker container from an image?

The command used to create a new Docker container from an image is "docker run." This command not only creates a container but also starts it immediately. When you execute "docker run," you're effectively pulling the specified image (if it’s not already locally available), creating a container instance from that image, and executing it in a process.

This command allows you to pass various optional flags that can set configurations like environment variables, port mappings, volume mounts, and other runtime parameters essential for the container's operation. For instance, the -p flag can map ports from the container to the host, and the -e flag can set environment variables in the container. By using "docker run," users can swiftly launch new applications in isolated environments, which is one of the core advantages of containerization.

The other commands serve different purposes within Docker operations. "docker start," for instance, is used to restart an already existing stopped container, and "docker create" indeed creates a container but does not start it automatically. "docker launch," while it might sound plausible, is not a recognized Docker command and therefore doesn't perform any Docker operations.