Question

What happens when you execute command? Docker run debian /bin/sh


Answer 1

Answer:

docker run debian /bin/sh A. A prompt from the shell of created container will be thrown to you B. A container is created and then exited immediately C. A container is created and executes in the detached mode; you can attach to it later using the container id D.

Answer 2

When you execute command Docker run debian /bin/sh

• A writeable container layer is first created over the supplied image by the docker run command, and then the specified command is used to start it. Docker run is therefore identical to using /containers/create followed by /containers/(id)/start in the API.
• Use the "docker exec" command with the "-it" option and the container ID and path to the bash shell to start a Bash shell in a Docker container. You can type "bash" to open a Bash terminal in your container if Bash is included in your PATH.
• Executing Commands in a Docker Container's Alternative Directory. Use the —workdir flag to indicate the directory where a command should be run in your container: container-name pwd docker exec —workdir /tmp.
• By default, Docker will start the container in "connected" mode if no arguments or flags are given. This indicates that the output of the currently running process is shown on the terminal window. If we were to press Ctrl+C, for example, it also signifies that the operating container has taken control of the terminal session.

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