initial commit of tests/4_container_images.sh v1.3.1
initial commit of tests/4_container_images.sh v1.3.1

Signed-off-by: Thomas Sjögren <9ff28d1cb1d19283ed3327b40df6c7d62d8bc343@users.noreply.github.com>

docker/docker-bench-security,konstruktoid/docker-bench-security