add network support

Signed-off-by: Guillaume Lours <705411+glours@users.noreply.github.com>

pkg/compose/compose.go

@@ -202,7 +202,7 @@ func (s *composeService) projectFromName(containers Containers, projectName stri
 			if err != nil {
 				continue
 			}
-			s.extractComposeConfiguration(service, inspect, volumes, secrets)
+			s.extractComposeConfiguration(&service, inspect, volumes, secrets, networks)
 		}
 		set[serviceLabel] = service
 	}
@@ -253,7 +253,7 @@ SERVICES:
 	return project, nil
 }
 
-func (s *composeService) extractComposeConfiguration(service types.ServiceConfig, inspect moby.ContainerJSON, volumes types.Volumes, secrets types.Secrets) {
+func (s *composeService) extractComposeConfiguration(service *types.ServiceConfig, inspect moby.ContainerJSON, volumes types.Volumes, secrets types.Secrets, networks types.Networks) {
 	service.Environment = types.NewMappingWithEquals(inspect.Config.Env)
 	if inspect.Config.Healthcheck != nil {
 		healthConfig := inspect.Config.Healthcheck
@@ -266,6 +266,11 @@ func (s *composeService) extractComposeConfiguration(service types.ServiceConfig
 		maps.Copy(volumes, detectedVolumes)
 		maps.Copy(secrets, detectedSecrets)
 	}
+	if len(inspect.NetworkSettings.Networks) > 0 {
+		detectedNetworks, networkConfigs := s.toComposeNetwork(inspect.NetworkSettings.Networks)
+		service.Networks = networkConfigs
+		maps.Copy(networks, detectedNetworks)
+	}
 }
 
 func increment(scale *int) *int {

pkg/compose/convert.go

@@ -27,6 +27,7 @@ import (
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/mount"
+	"github.com/docker/docker/api/types/network"
 	"github.com/docker/docker/api/types/versions"
 )
 
@@ -170,3 +171,27 @@ func (s *composeService) toComposeVolumes(volumes []types.MountPoint) (map[strin
 	}
 	return volumeConfigs, serviceVolumeConfigs, secretConfigs, serviceSecretConfigs
 }
+
+func (s *composeService) toComposeNetwork(networks map[string]*network.EndpointSettings) (map[string]compose.NetworkConfig, map[string]*compose.ServiceNetworkConfig) {
+	networkConfigs := make(map[string]compose.NetworkConfig)
+	serviceNetworkConfigs := make(map[string]*compose.ServiceNetworkConfig)
+
+	for name, net := range networks {
+		if strings.HasSuffix(name, "_default") {
+			continue
+		}
+		inspect, err := s.apiClient().NetworkInspect(context.Background(), name, network.InspectOptions{})
+		if err != nil {
+			networkConfigs[name] = compose.NetworkConfig{}
+		} else {
+			networkConfigs[name] = compose.NetworkConfig{
+				Internal: inspect.Internal,
+			}
+
+		}
+		serviceNetworkConfigs[name] = &compose.ServiceNetworkConfig{
+			Aliases: net.Aliases,
+		}
+	}
+	return networkConfigs, serviceNetworkConfigs
+}