Update Dockerfile

Dockerfile

@@ -1,4 +1,5 @@
-FROM python:3.9
+# USE SPECIFIC VERSION (Fixes the missing file crash)
+FROM python:3.9-bullseye
 
 # 1. Install system dependencies
 RUN apt-get update && apt-get install -y \
@@ -11,14 +12,14 @@ RUN apt-get update && apt-get install -y \
     scrot \
     && rm -rf /var/lib/apt/lists/*
 
-# 2. Fix the 403 Error: Create an index.html so the page loads
-# We link the NoVNC viewer to the default index page
+# 2. Fix the 403 Error (Missing Index)
+# Force NoVNC to show the viewer by default
 RUN ln -s /usr/share/novnc/vnc.html /usr/share/novnc/index.html
 
 # 3. Set up work directory
 WORKDIR /app
 
-# 4. Copy files
+# 4. Copy your python files
 COPY . .
 
 # 5. Install Python requirements
@@ -27,8 +28,7 @@ RUN pip install --no-cache-dir -r requirements.txt
 # 6. Create the user
 RUN useradd -m -u 1000 user
 
-# 7. GENERATE THE STARTUP SCRIPT MANUALLY
-# We write the script here to avoid all permission/line-ending issues
+# 7. GENERATE STARTUP SCRIPT (Fixes permissions & line endings)
 RUN echo '#!/bin/bash' > start.sh && \
     echo 'export DISPLAY=:1' >> start.sh && \
     echo 'Xvfb :1 -screen 0 1440x960x24 &' >> start.sh && \
@@ -39,7 +39,7 @@ RUN echo '#!/bin/bash' > start.sh && \
     echo '/usr/share/novnc/utils/launch.sh --vnc localhost:5900 --listen 7860' >> start.sh && \
     chmod +x start.sh
 
-# 8. Fix permissions for the user
+# 8. Transfer ownership to user
 RUN chown -R user:user /app
 
 # 9. Switch to user and run