Update Dockerfile

Dockerfile

@@ -3,12 +3,16 @@ FROM python:3.11-slim
 
 WORKDIR /app
 
-# Install system deps
+# Install system deps including libGL for OpenCV
 RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
     libsndfile1 \
+    libgl1-mesa-glx \
     && rm -rf /var/lib/apt/lists/*
 
+# Upgrade pip to avoid dependency resolution issues
+RUN pip install --upgrade pip
+
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt