Update app.py

app.py

@@ -2,57 +2,54 @@ import gradio as gr
 import subprocess
 import os
 
-# Where uploads land inside the container
-WORKDIR = "/workspace"
+# Use container’s home directory to avoid permission errors
+WORKDIR = os.path.join(os.environ['HOME'], "workspace")
 os.makedirs(WORKDIR, exist_ok=True)
 
-# Embed noVNC iframe HTML
+# HTML iframe to embed noVNC viewer
 NO_VNC_IFRAME = """
 <iframe src="http://localhost:6080/vnc.html?autoconnect=true&resize=remote"
         style="width:100%; height:600px; border:none;">
 </iframe>
 """
 
-def start_sandbox():
-    # The noVNC server is already running; just return iframe
+def start_desktop():
     return NO_VNC_IFRAME
 
-def run_shell(cmd: str):
-    # Run command inside container; keep DISPLAY so GUI apps can launch
+def run_shell(cmd):
     result = subprocess.run(
         cmd,
         shell=True,
         capture_output=True,
         text=True,
-        env={**os.environ, "DISPLAY": ":1"}
+        env={**os.environ, "DISPLAY": ":1"}  # Supports GUI apps if needed
     )
     return result.stdout + result.stderr
 
 def upload_file(file):
-    # Save uploaded file into WORKDIR
-    dest = os.path.join(WORKDIR, os.path.basename(file.name))
-    with open(dest, "wb") as f:
+    dest_path = os.path.join(WORKDIR, os.path.basename(file.name))
+    with open(dest_path, "wb") as f:
         f.write(file.read())
-    return f"Saved to sandbox: {dest}"
+    return f"✅ Uploaded to: {dest_path}"
 
 with gr.Blocks(css="@import url('https://cdn.simplecss.org/simple.min.css');") as demo:
-    gr.Markdown("# 🔒 Offline Sandbox Desktop")
+    gr.Markdown("# 🖥️ Offline Visual Sandbox (no API, no cost)")
 
     with gr.Tab("Desktop"):
-        btn = gr.Button("Show Desktop")
+        launch_btn = gr.Button("Launch Desktop")
         desktop_view = gr.HTML()
-        btn.click(start_sandbox, outputs=desktop_view)
+        launch_btn.click(start_desktop, outputs=desktop_view)
 
     with gr.Tab("Shell"):
-        cmd = gr.Textbox(label="Shell Command", placeholder="e.g. ls -al /workspace")
-        run = gr.Button("Run")
-        out = gr.Textbox(label="Output", lines=10)
-        run.click(run_shell, inputs=cmd, outputs=out)
+        cmd_input = gr.Textbox(label="Shell Command", placeholder="Try 'ls /home/user/workspace'")
+        run_btn = gr.Button("Run")
+        cmd_output = gr.Textbox(label="Command Output", lines=10)
+        run_btn.click(run_shell, inputs=cmd_input, outputs=cmd_output)
 
     with gr.Tab("Upload"):
-        uploader = gr.File(label="Upload to Sandbox")
-        status = gr.Textbox(label="Upload Status")
-        uploader.change(upload_file, inputs=uploader, outputs=status)
+        file_input = gr.File(label="Upload File")
+        status_output = gr.Textbox(label="Upload Status")
+        file_input.change(upload_file, inputs=file_input, outputs=status_output)
 
     demo.launch(
         server_name="0.0.0.0",