Force apps to always use host mode during development

- Modified executeApp() to always use executeAppLocalNode() regardless of runtimeMode2 setting
- Removed Docker mode checks from cleanUpPort() and restart-app handler
- Updated RuntimeModeSelector to disable Docker option and show informative message
- Apps now always run locally for optimal development experience, Docker mode disabled

Author: SFARPak

src/components/RuntimeModeSelector.tsx

@@ -17,9 +17,13 @@ export function RuntimeModeSelector() {
     return null;
   }
 
-  const isDockerMode = settings?.runtimeMode2 === "docker";
-
+  // Apps always run in host mode now - Docker is disabled for development
   const handleRuntimeModeChange = async (value: "host" | "docker") => {
+    // Only allow host mode - Docker is disabled for app development
+    if (value === "docker") {
+      showError("Docker mode is disabled. Apps always run in local development mode for optimal development experience.");
+      return;
+    }
     try {
       await updateSettings({ runtimeMode2: value });
     } catch (error: any) {
@@ -43,32 +47,18 @@ export function RuntimeModeSelector() {
             </SelectTrigger>
             <SelectContent>
               <SelectItem value="host">Local (default)</SelectItem>
-              <SelectItem value="docker">Docker (experimental)</SelectItem>
+              <SelectItem value="docker" disabled>Docker (disabled)</SelectItem>
             </SelectContent>
           </Select>
         </div>
         <div className="text-sm text-gray-500 dark:text-gray-400">
-          Choose whether to run apps directly on the local machine or in Docker
-          containers
+          Apps always run in local development mode for optimal development experience.
+          Docker mode is disabled.
         </div>
       </div>
-      {isDockerMode && (
-        <div className="text-sm text-amber-600 dark:text-amber-400 bg-amber-50 dark:bg-amber-900/20 p-2 rounded">
-          ⚠️ Docker mode is <b>experimental</b> and requires{" "}
-          <button
-            type="button"
-            className="underline font-medium cursor-pointer"
-            onClick={() =>
-              IpcClient.getInstance().openExternalUrl(
-                "https://www.docker.com/products/docker-desktop/",
-              )
-            }
-          >
-            Docker Desktop
-          </button>{" "}
-          to be installed and running
-        </div>
-      )}
+      <div className="text-sm text-blue-600 dark:text-blue-400 bg-blue-50 dark:bg-blue-900/20 p-2 rounded">
+        ℹ️ Docker mode is disabled for app development. Apps run directly on your local machine for the best development experience.
+      </div>
     </div>
   );
 }

src/ipc/handlers/app_handlers.ts

@@ -180,28 +180,16 @@ async function executeApp({
     proxyWorker.terminate();
     proxyWorker = null;
   }
-  const settings = readSettings();
-  const runtimeMode = settings.runtimeMode2 ?? "host";
 
-  if (runtimeMode === "docker") {
-    await executeAppInDocker({
-      appPath,
-      appId,
-      event,
-      isNeon,
-      installCommand,
-      startCommand,
-    });
-  } else {
-    await executeAppLocalNode({
-      appPath,
-      appId,
-      event,
-      isNeon,
-      installCommand,
-      startCommand,
-    });
-  }
+  // Always use host mode for app development - Docker is experimental and not suitable for development
+  await executeAppLocalNode({
+    appPath,
+    appId,
+    event,
+    isNeon,
+    installCommand,
+    startCommand,
+  });
 }
 
 async function ensureBackendDirectory(backendPath: string): Promise<void> {
@@ -1667,9 +1655,6 @@ export function registerAppHandlers() {
 
           // Remove node_modules if requested
           if (removeNodeModules) {
-            const settings = readSettings();
-            const runtimeMode = settings.runtimeMode2 ?? "host";
-
             const nodeModulesPath = path.join(appPath, "node_modules");
             logger.log(
               `Removing node_modules for app ${appId} at ${nodeModulesPath}`,
@@ -1683,24 +1668,6 @@ export function registerAppHandlers() {
             } else {
               logger.log(`No node_modules directory found for app ${appId}`);
             }
-
-            // If running in Docker mode, also remove container volumes so deps reinstall freshly
-            if (runtimeMode === "docker") {
-              logger.log(
-                `Docker mode detected for app ${appId}. Removing Docker volumes dyad-pnpm-${appId}...`,
-              );
-              try {
-                await removeDockerVolumesForApp(appId);
-                logger.log(
-                  `Removed Docker volumes for app ${appId} (dyad-pnpm-${appId}).`,
-                );
-              } catch (e) {
-                // Best-effort cleanup; log and continue
-                logger.warn(
-                  `Failed to remove Docker volumes for app ${appId}. Continuing: ${e}`,
-                );
-              }
-            }
           }
 
           logger.debug(
@@ -2302,12 +2269,8 @@ function getCommand({
 }
 
 async function cleanUpPort(port: number) {
-  const settings = readSettings();
-  if (settings.runtimeMode2 === "docker") {
-    await stopDockerContainersOnPort(port);
-  } else {
-    await killProcessOnPort(port);
-  }
+  // Always use host mode cleanup since apps always run in host mode
+  await killProcessOnPort(port);
 }
 
 async function installDependencies(projectPath: string, framework: string) {