install/uninstall: allow aliasing buildx to docker builder

Currently the user can type `docker buildx` to use this tool.
This patch allows the user to install buildx as a `docker builder` alias.

As an additional benefit, this allows the regular `docker build` to hook
into `buildx build`.

Note that the install and uninstall commands are currently hidden.

Signed-off-by: Tibor Vass <tibor@docker.com>

vendor/github.com/docker/cli/opts/network.go

@@ -15,9 +15,13 @@ const (
 
 // NetworkAttachmentOpts represents the network options for endpoint creation
 type NetworkAttachmentOpts struct {
-	Target     string
-	Aliases    []string
-	DriverOpts map[string]string
+	Target       string
+	Aliases      []string
+	DriverOpts   map[string]string
+	Links        []string // TODO add support for links in the csv notation of `--network`
+	IPv4Address  string   // TODO add support for IPv4-address in the csv notation of `--network`
+	IPv6Address  string   // TODO add support for IPv6-address in the csv notation of `--network`
+	LinkLocalIPs []string // TODO add support for LinkLocalIPs in the csv notation of `--network` ?
 }
 
 // NetworkOpt represents a network config in swarm mode.
@@ -95,6 +99,16 @@ func (n *NetworkOpt) String() string {
 	return ""
 }
 
+// NetworkMode return the network mode for the network option
+func (n *NetworkOpt) NetworkMode() string {
+	networkIDOrName := "default"
+	netOptVal := n.Value()
+	if len(netOptVal) > 0 {
+		networkIDOrName = netOptVal[0].Target
+	}
+	return networkIDOrName
+}
+
 func parseDriverOpt(driverOpt string) (string, string, error) {
 	parts := strings.SplitN(driverOpt, "=", 2)
 	if len(parts) != 2 {