fix: clean up container on NetworkConnect failure to prevent orphans

When NetworkConnect fails for a secondary network on API < 1.44,
remove the just-created container before returning the error.
This prevents orphan containers that cause name conflicts on retry.

Author: jotka

pkg/compose/convergence.go

@@ -751,12 +751,16 @@ func (s *composeService) createMobyContainer(ctx context.Context, project *types
 			}
 			epSettings, err := createEndpointSettings(project, service, number, networkKey, cfgs.Links, opts.UseNetworkAliases)
 			if err != nil {
+				// Clean up the container we just created to avoid orphans
+				_, _ = s.apiClient().ContainerRemove(ctx, response.ID, client.ContainerRemoveOptions{Force: true})
 				return created, err
 			}
 			if _, err := s.apiClient().NetworkConnect(ctx, mobyNetworkName, client.NetworkConnectOptions{
 				Container:      response.ID,
 				EndpointConfig: epSettings,
 			}); err != nil {
+				// Clean up the container we just created to avoid orphans
+				_, _ = s.apiClient().ContainerRemove(ctx, response.ID, client.ContainerRemoveOptions{Force: true})
 				return created, err
 			}
 		}

pkg/compose/convergence_test.go

@@ -593,3 +593,66 @@ func TestCreateMobyContainerLegacyAPI(t *testing.T) {
 	assert.Equal(t, gotConnect.Container, "an-id")
 	assert.Check(t, gotConnect.EndpointConfig != nil)
 }
+
+func TestCreateMobyContainerLegacyAPI_NetworkConnectFailure(t *testing.T) {
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	apiClient := mocks.NewMockAPIClient(mockCtrl)
+	cli := mocks.NewMockCli(mockCtrl)
+	tested, err := NewComposeService(cli)
+	assert.NilError(t, err)
+	cli.EXPECT().Client().Return(apiClient).AnyTimes()
+	cli.EXPECT().ConfigFile().Return(&configfile.ConfigFile{}).AnyTimes()
+	apiClient.EXPECT().DaemonHost().Return("").AnyTimes()
+	apiClient.EXPECT().ImageInspect(anyCancellableContext(), gomock.Any()).Return(client.ImageInspectResult{}, nil).AnyTimes()
+
+	// force `RuntimeVersion` to return a pre-1.44 API version
+	runtimeVersion = runtimeVersionCache{}
+	apiClient.EXPECT().ServerVersion(gomock.Any(), gomock.Any()).Return(client.ServerVersionResult{
+		APIVersion: "1.43",
+	}, nil).AnyTimes()
+
+	service := types.ServiceConfig{
+		Name: "test",
+		Networks: map[string]*types.ServiceNetworkConfig{
+			"a": {
+				Priority: 10,
+			},
+			"b": {
+				Priority: 100,
+			},
+		},
+	}
+	project := types.Project{
+		Name: "bork",
+		Services: types.Services{
+			"test": service,
+		},
+		Networks: types.Networks{
+			"a": types.NetworkConfig{
+				Name: "a-moby-name",
+			},
+			"b": types.NetworkConfig{
+				Name: "b-moby-name",
+			},
+		},
+	}
+
+	apiClient.EXPECT().ContainerCreate(gomock.Any(), gomock.Any()).Return(client.ContainerCreateResult{ID: "an-id"}, nil)
+
+	// NetworkConnect fails
+	connectErr := fmt.Errorf("network connect failed")
+	apiClient.EXPECT().NetworkConnect(gomock.Any(), gomock.Eq("a-moby-name"), gomock.Any()).Return(client.NetworkConnectResult{}, connectErr)
+
+	// ContainerRemove should be called to clean up the orphan container
+	apiClient.EXPECT().ContainerRemove(gomock.Any(), gomock.Eq("an-id"), gomock.Any()).DoAndReturn(func(_ context.Context, _ string, opts client.ContainerRemoveOptions) (client.ContainerRemoveResult, error) {
+		assert.Check(t, opts.Force, "ContainerRemove should use Force")
+		return client.ContainerRemoveResult{}, nil
+	})
+
+	_, err = tested.(*composeService).createMobyContainer(t.Context(), &project, service, "test", 0, nil, createOptions{
+		Labels:            make(types.Labels),
+		UseNetworkAliases: true,
+	})
+	assert.ErrorContains(t, err, "network connect failed")
+}