Desired Behavior

I need the docker rm --force command to exit with success if the specified containers don't exist. This is analogous to the rm -f shell command.

$ docker rm --force nonexistent_container ; echo $?
0

Current Behavior

Currently, the command exits with status 1 if no containers were deleted.

$ docker rm --force nonexistent_container ; echo $?
Error: No such container: nonexistent_container
1

Why I need this change

I am calling this command in a cleanup script. I need to be able to run the script repeatedly, without creating any containers in between runs. The script needs to stop and report an error if docker rm --force cannot do what it needs to do. For example, if it cannot connect to dockerd. But if the containers are already deleted, then the script needs to continue. With the current behavior of docker rm --force, the script must perform its own check for containers before calling docker rm --force. This is extra code. Alternatively, the script can silently ignore failure of the command. This has serious drawbacks.