Add "driver" filter for network ls

This add a new filter to 'docker network ls'
to allow filtering by driver-name.

Contrary to "ID" and "name" filters, this
filter only supports an *exact* match.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

contrib/completion/bash/docker

@@ -1378,6 +1378,11 @@ _docker_network_inspect() {
 _docker_network_ls() {
 	local key=$(__docker_map_key_of_current_option '--filter|-f')
 	case "$key" in
+		driver)
+			local plugins=" $(__docker_plugins Network) "
+			COMPREPLY=( $(compgen -W "$plugins" -- "${cur##*=}") )
+			return
+			;;
 		id)
 			cur="${cur##*=}"
 			__docker_complete_network_ids
@@ -1396,7 +1401,7 @@ _docker_network_ls() {
 
 	case "$prev" in
 		--filter|-f)
-			COMPREPLY=( $( compgen -S = -W "id name type" -- "$cur" ) )
+			COMPREPLY=( $( compgen -S = -W "driver id label name type" -- "$cur" ) )
 			__docker_nospace
 			return
 			;;

docs/reference/commandline/network_ls.md

@@ -51,11 +51,25 @@ Multiple filter flags are combined as an `OR` filter. For example,
 
 The currently supported filters are:
 
+* driver
 * id (network's id)
 * label (`label=<key>` or `label=<key>=<value>`)
 * name (network's name)
 * type (custom|builtin)
 
+#### Driver
+
+The `driver` filter matches networks based on their driver.
+
+The following example matches networks with the `bridge` driver:
+
+```bash
+$ docker network ls --filter driver=bridge
+NETWORK ID          NAME                DRIVER
+db9db329f835        test1               bridge
+f6e212da9dfd        test2               bridge
+```
+
 #### ID
 
 The `id` filter matches on all or part of a network's ID.
@@ -83,7 +97,7 @@ NETWORK ID          NAME                DRIVER
 
 #### Label
 
-The `label` filter matches containers based on the presence of a `label` alone or a `label` and a
+The `label` filter matches networks based on the presence of a `label` alone or a `label` and a
 value.
 
 The following filter matches networks with the `usage` label regardless of its value.
@@ -95,7 +109,7 @@ db9db329f835        test1               bridge
 f6e212da9dfd        test2               bridge
 ```
 
-The following filter matches containers with the `usage` label with the `prod` value.
+The following filter matches networks with the `usage` label with the `prod` value.
 
 ```bash
 $ docker network ls -f "label=usage=prod"

man/docker-network-ls.1.md

@@ -46,11 +46,25 @@ Multiple filter flags are combined as an `OR` filter. For example,
 
 The currently supported filters are:
 
+* driver
 * id (network's id)
 * label (`label=<key>` or `label=<key>=<value>`)
 * name (network's name)
 * type (custom|builtin)
 
+#### Driver
+
+The `driver` filter matches networks based on their driver.
+
+The following example matches networks with the `bridge` driver:
+
+```bash
+$ docker network ls --filter driver=bridge
+NETWORK ID          NAME                DRIVER
+db9db329f835        test1               bridge
+f6e212da9dfd        test2               bridge
+```
+
 #### ID
 
 The `id` filter matches on all or part of a network's ID.
@@ -78,7 +92,7 @@ NETWORK ID          NAME                DRIVER
 
 #### Label
 
-The `label` filter matches containers based on the presence of a `label` alone or a `label` and a
+The `label` filter matches networks based on the presence of a `label` alone or a `label` and a
 value.
 
 The following filter matches networks with the `usage` label regardless of its value.
@@ -90,7 +104,7 @@ db9db329f835        test1               bridge
 f6e212da9dfd        test2               bridge
 ```
 
-The following filter matches containers with the `usage` label with the `prod` value.
+The following filter matches networks with the `usage` label with the `prod` value.
 
 ```bash
 $ docker network ls -f "label=usage=prod"