add cloud info

CloudComputing_Lab/modules/ROOT/pages/admin.adoc

@@ -216,6 +216,44 @@ docker ps NETWORK ID
 docker ps VOLUME ID
 ----
 
+== prune - remove obj
+
+Remove all unused objects.
+
+*prune* will delete ALL dangling data i.e. containers stopped, volumes without containers and images with no containers
+
+=== images
+
+[source,sh]
+----
+docker image prune 
+----
+
+TIP: docker rmi $(docker images --filter "dangling=true" -q --no-trunc)
+
+=== container 
+
+[source,sh]
+----
+docker container prune
+----
+
+=== network
+
+[source,sh]
+----
+docker network prune
+----
+
+=== volume
+
+[source,sh]
+----
+docker volume prune
+----
+
+
+
 
 == repositories