Force reinstall opencv-python-headless to override full opencv

Amp-Thread-ID: https://ampcode.com/threads/T-22e83726-d77c-475f-b185-6d55f37c5979
Co-authored-by: Amp <amp@ampcode.com>

Dockerfile

@@ -4,7 +4,8 @@ WORKDIR /app
 
 # Copy requirements first to leverage Docker cache
 COPY requirements.txt .
-RUN pip install --no-cache-dir -r requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt && \
+    pip install --no-cache-dir --force-reinstall opencv-python-headless==4.9.0.80
 
 # Copy application files
 COPY app.py model.py config.yaml .