Add bash completion for `docker network create --attachable`
Add bash completion for `docker network create --attachable`

Signed-off-by: Harald Albers <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@albersweb.de>

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