feat: add --polling flag

Author: pratikjagrut

cmd/sync.go

@@ -33,6 +33,7 @@ type SyncCmd struct {
 	Pod           string
 	Pick          bool
 	Wait          bool
+	Polling       bool
 
 	Exclude       []string
 	ContainerPath string
@@ -100,6 +101,7 @@ devspace sync --container-path=/my-path
 	syncCmd.Flags().BoolVar(&cmd.DownloadOnly, "download-only", false, "If set DevSpace will only download files")
 
 	syncCmd.Flags().BoolVar(&cmd.Wait, "wait", true, "Wait for the pod(s) to start if they are not running")
+	syncCmd.Flags().BoolVar(&cmd.Polling, "polling", false, "If polling should be used to detect file changes in the container")
 
 	return syncCmd
 }
@@ -301,5 +303,9 @@ func (cmd *SyncCmd) applyFlagsToSyncConfig(syncConfig *latest.SyncConfig) error
 		syncConfig.InitialSync = latest.InitialSyncStrategy(cmd.InitialSync)
 	}
 
+	if cmd.Polling {
+		syncConfig.Polling = cmd.Polling
+	}
+
 	return nil
 }

e2e/tests/sync/sync.go

@@ -72,8 +72,9 @@ var _ = DevSpaceDescribe("sync", func() {
 			ImageSelector: "node:13.14-alpine",
 			ContainerPath: "/app",
 			UploadOnly:    true,
-			// Polling:       true,
-			Interrupt: interrupt,
+			Polling:       true,
+			Wait:          true,
+			Interrupt:     interrupt,
 		}
 
 		// start the command

pkg/devspace/services/synccontroller/controller.go

@@ -283,6 +283,7 @@ func (c *controller) startSync(options *Options, onInitUploadDone chan struct{},
 	if len(options.TargetOptions.ImageSelector) == 0 {
 		options.TargetOptions.ImageSelector = []imageselector.ImageSelector{}
 	}
+
 	if syncConfig.ImageSelector != "" {
 		imageSelector, err := runtimevar.NewRuntimeResolver(true).FillRuntimeVariablesAsImageSelector(syncConfig.ImageSelector, c.config, c.dependencies)
 		if err != nil {