Update Dockerfile

Dockerfile

@@ -1,6 +1,6 @@
 FROM ubuntu:22.04
 
-# 1. Install Desktop Environment & Tools (No Interaction Mode)
+# 1. Install System Tools & Desktop
 ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && apt-get install -y \
     xfce4 \
@@ -8,29 +8,36 @@ RUN apt-get update && apt-get install -y \
     xvfb \
     python3 \
     python3-pip \
+    python3-tk \
+    python3-dev \
     scrot \
     chromium-browser \
     wget \
     curl \
     unzip \
     zip \
+    x11-utils \
     && apt-get clean
 
-# 2. Setup Working Directory
+# 2. Setup Directory
 WORKDIR /app
 
-# 3. Install Python Libraries
+# 3. Python Libs
 COPY requirements.txt .
 RUN pip3 install --no-cache-dir -r requirements.txt
 
-# 4. Copy App Code
+# 4. Set Display Environment Variable (CRITICAL FIX)
+ENV DISPLAY=:99
+
+# 5. Copy Files
 COPY . .
 
-# 5. Permissions
+# 6. Permissions for start script
+RUN chmod +x start.sh
 RUN chmod -R 777 /app
 
-# 6. Expose Port
+# 7. Expose Port
 EXPOSE 7860
 
-# 7. Start Command (Xvfb Virtual Screen + Flask App)
-CMD ["sh", "-c", "Xvfb :99 -screen 0 1024x768x16 & export DISPLAY=:99 && startxfce4 & python3 app.py"]
+# 8. Run the Startup Script
+CMD ["/bin/bash", "start.sh"]