What does the command 'docker run --rm nginx' do?

What does the command 'docker run --rm nginx' do?

• A. Forces removal of the image
• B. Keeps the container after exit
• C. Starts an interactive shell
• D. Pulls the nginx image if it does not exist, runs a container, and removes the container upon exit

Answer: (D)

The --rm flag makes Docker clean up the container after it finishes. In this command, Docker will pull the nginx image if it isn’t already on the system, run a container from that image (nginx starts in the foreground by default), and then automatically remove the container when nginx exits. The image itself stays in your local cache, and you won’t get an interactive shell unless you explicitly request one.

The --rm flag makes Docker clean up the container after it finishes. In this command, Docker will pull the nginx image if it isn’t already on the system, run a container from that image (nginx starts in the foreground by default), and then automatically remove the container when nginx exits. The image itself stays in your local cache, and you won’t get an interactive shell unless you explicitly request one.