The Dockerfile shown in the exhibit sets up an NGINX container with a delay before starting the NGINX service. It uses the ENTRYPOINT and CMD directives to define the commands that should be executed when the container starts.
* ARG and ENV: These lines define and set an argument and environment variable for the delay.
* ENTRYPOINT: Specifies the executable to run, in this case, /bin/sh.
* CMD: Provides additional arguments to the ENTRYPOINT, which are -c and the command string to execute.
The combined command that will be executed is: /bin/sh -c "/bin/sleep 30 && nginx -g 'daemon off;'" Reference:
Docker Documentation: ENTRYPOINT