I used docker nvcr.io/nvidia/deepstream:5.1-21.02-samples
I run in a location: root@cf559d5e24b7:/opt/nvidia/deepstream/deepstream-5.1/sources/apps/sample_apps/deepstream-app#
DeepStream samples docker (contains the runtime libraries, GStreamer plugins, reference applications and sample streams, models and configs)
You can use nvcr.io/nvidia/deepstream:5.1-21.02-devel
which contains the entire SDK along with a development environment for building DeepStream applications