set noparent

# These owners are in place to ensure that dockerfiles are changed in a way
# that maximizes use of docker cache when rebuilding and that the docker images
# are fast to build and sane in general.
# Also, push_testing_images.sh needs to be used upon changing the docker images
# for kokoro to be able to access the pre-built images.

@jtattermusch
@apolcyn