Rewrite ENTRYPOINT documentation covering all the combinations with examples.
Rewrite ENTRYPOINT documentation covering all the combinations with examples.

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)

ashfall/cli,Zebrilee/cli,cpuguy83/cli,ashfall/cli,allencloud/cli,riyazdf/cli,thaJeztah/cli,redpanda/cli,docker/cli,Zebrilee/cli,cpuguy83/cli,riyazdf/cli,allencloud/cli,dnephin/cli,e11137/cli,e11137/cli,thaJeztah/cli,dnephin/cli,redpanda/cli,docker/cli