Add some information about the docker build return code
Add some information about the docker build return code

Signed-off-by: Sven Dowideit <6f6969dc7db01e7204496bfb27e43d63ec4b2eb3@home.org.au>

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