Updating docs to reflect new docker network CLI in v1.9 and adding an equivalent docker-compose example.
Updating docs to reflect new docker network CLI in v1.9
and adding an equivalent docker-compose example.

nats-io/docker-docs,astawiarski/docs,docker-solr/docs,odoo/docker-docs,dmetzler/docker-library-docs,infosiftr/docker-library-docs,dpwspoon/docs,Bonitasoft-Community/docker_docs,zendtech/docs,dpwspoon/docs,gprivitera/docs,caoyangs/docs,dinogun/docs,nats-io/docker-docs,Bonitasoft-Community/docker_docs,docker-flink/docs,caoyangs/docs,tilosp-docker/library-docs,gprivitera/docs,dinogun/docs,davidcurrie/docs,vaygr/docker-library-docs,pydio/docs,odoo/docker-docs,dmetzler/docker-library-docs,jetty-project/docker-docs,crate/docker-docs,emilevauge/docs,docker-solr/docs,jperrin/docs,pierreozoux/docs,c0b/docs,orientechnologies/docker-docs,vaygr/docker-library-docs,car031/docs,avoinea/docs,ceejatec/docs,docker-library/docs,ceejatec/docs,Lightstreamer/docs,appropriate/docker-library-docs,c0b/docs,car031/docs,vmassol/docs,astawiarski/docs,pydio/docs,31z4/docs,jetty-project/docker-docs,zendtech/docs,emilevauge/docs,appropriate/docker-library-docs,infosiftr/docker-library-docs,pierreozoux/docs,tilosp-docker/library-docs,davidcurrie/docs,crate/docker-docs,jperrin/docs,vmassol/docs,avoinea/docs,orientechnologies/docker-docs,docker-flink/docs,31z4/docs,docker-library/docs,Lightstreamer/docs