add --keepContainerRunning option

[mserranom]

Currently docker commands are run with --rm option, that destroys the container after execution.

A --keep-container will not destroy the containers, which is useful for debugging purposes.

[vijayakumark]

to make it consistent with other options, I would suggest keeping the option name in all lower case separated by hyphen. Also considering that by the time script finishes the container may have stopped even without --rm , we may want to name the option --keep-container .

When --keep-container option is passed we could skip removing container, effectively keeping it in a stopped state.

[mserranom]

thanks @vijayakumark, updated