Update Dockerfile

Dockerfile

@@ -1,7 +1,7 @@
 # Use official Python image
 FROM python:3.11-slim
 
-# Install modern system dependencies required by image processing
+# Install system dependencies
 RUN apt-get update && apt-get install -y \
     libgl1 \
     libglib2.0-0 \
@@ -13,12 +13,14 @@ WORKDIR /app
 # Copy your requirements
 COPY requirements.txt .
 
-# Install dependencies (CPU-only PyTorch to save space)
+# Install dependencies (Ultralytics will sneakily install the GUI version of OpenCV here)
 RUN pip install --no-cache-dir -r requirements.txt
 
-# CRITICAL FIX: Ultralytics secretly installs the GUI version of OpenCV. 
-# We must uninstall it so Python is forced to use opencv-python-headless!
-RUN pip uninstall -y opencv-python
+# CRITICAL FIX: Wipe out ALL versions of OpenCV so the cv2 folder is completely gone
+RUN pip uninstall -y opencv-python opencv-python-headless
+
+# Reinstall strictly the headless version as the final authority
+RUN pip install --no-cache-dir opencv-python-headless
 
 # Copy all your scripts and weights into the container
 COPY . .