Fix named network in compose file

Signed-off-by: Daniel Nephin <dnephin@docker.com>

cli/compose/convert/compose.go

@@ -87,7 +87,12 @@ func Networks(namespace Namespace, networks networkMap, servicesNetworks map[str
 			}
 			createOpts.IPAM.Config = append(createOpts.IPAM.Config, config)
 		}
-		result[internalName] = createOpts
+
+		networkName := namespace.Scope(internalName)
+		if network.Name != "" {
+			networkName = network.Name
+		}
+		result[networkName] = createOpts
 	}
 
 	return result, externalNetworks

cli/compose/convert/compose_test.go

@@ -35,6 +35,7 @@ func TestNetworks(t *testing.T) {
 		"outside":       {},
 		"default":       {},
 		"attachablenet": {},
+		"named":         {},
 	}
 	source := networkMap{
 		"normal": composetypes.NetworkConfig{
@@ -62,14 +63,17 @@ func TestNetworks(t *testing.T) {
 			Driver:     "overlay",
 			Attachable: true,
 		},
+		"named": composetypes.NetworkConfig{
+			Name: "othername",
+		},
 	}
 	expected := map[string]types.NetworkCreate{
-		"default": {
+		"foo_default": {
 			Labels: map[string]string{
 				LabelNamespace: "foo",
 			},
 		},
-		"normal": {
+		"foo_normal": {
 			Driver: "overlay",
 			IPAM: &network.IPAM{
 				Driver: "driver",
@@ -87,18 +91,21 @@ func TestNetworks(t *testing.T) {
 				"something":    "labeled",
 			},
 		},
-		"attachablenet": {
+		"foo_attachablenet": {
 			Driver:     "overlay",
 			Attachable: true,
 			Labels: map[string]string{
 				LabelNamespace: "foo",
 			},
 		},
+		"othername": {
+			Labels: map[string]string{LabelNamespace: "foo"},
+		},
 	}
 
 	networks, externals := Networks(namespace, source, serviceNetworks)
-	assert.Check(t, is.DeepEqual(expected, networks))
-	assert.Check(t, is.DeepEqual([]string{"special"}, externals))
+	assert.DeepEqual(t, expected, networks)
+	assert.DeepEqual(t, []string{"special"}, externals)
 }
 
 func TestSecrets(t *testing.T) {

cli/compose/convert/service.go

@@ -229,7 +229,7 @@ func convertServiceNetworks(
 			aliases = network.Aliases
 		}
 		target := namespace.Scope(networkName)
-		if networkConfig.External.External {
+		if networkConfig.Name != "" {
 			target = networkConfig.Name
 		}
 		netAttachConfig := swarm.NetworkAttachmentConfig{

cli/compose/loader/loader_test.go

@@ -10,6 +10,7 @@ import (
 	"time"
 
 	"github.com/docker/cli/cli/compose/types"
+	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/gotestyourself/gotestyourself/assert"
 	is "github.com/gotestyourself/gotestyourself/assert/cmp"
 	"github.com/sirupsen/logrus"
@@ -1357,3 +1358,40 @@ networks:
 	assert.ErrorContains(t, err, "network.external.name and network.name conflict; only use network.name")
 	assert.ErrorContains(t, err, "foo")
 }
+
+func TestLoadNetworkWithName(t *testing.T) {
+	config, err := loadYAML(`
+version: '3.5'
+services:
+  hello-world:
+    image: redis:alpine
+    networks:
+      - network1
+      - network3
+
+networks:
+  network1:
+    name: network2
+  network3:
+`)
+	assert.NilError(t, err)
+	expected := &types.Config{
+		Filename: "filename.yml",
+		Version:  "3.5",
+		Services: types.Services{
+			{
+				Name:  "hello-world",
+				Image: "redis:alpine",
+				Networks: map[string]*types.ServiceNetworkConfig{
+					"network1": nil,
+					"network3": nil,
+				},
+			},
+		},
+		Networks: map[string]types.NetworkConfig{
+			"network1": {Name: "network2"},
+			"network3": {},
+		},
+	}
+	assert.DeepEqual(t, config, expected, cmpopts.EquateEmpty())
+}