fix: install ML packages separately and add OpenCV/system dependencies

Dockerfile

@@ -13,10 +13,22 @@ RUN apt-get update && apt-get install -y \
     libxrender-dev \
     libgomp1 \
     libgthread-2.0-0 \
+    libgtk-3-0 \
+    libavcodec-dev \
+    libavformat-dev \
+    libswscale-dev \
+    libv4l-dev \
+    libxvidcore-dev \
+    libx264-dev \
+    libjpeg-dev \
+    libpng-dev \
+    libtiff-dev \
+    libatlas-base-dev \
     git \
     build-essential \
     gcc \
     g++ \
+    cmake \
     && rm -rf /var/lib/apt/lists/*
 
 # Create user for Hugging Face Spaces (following HF Spaces best practices)
@@ -41,11 +53,14 @@ RUN pip install --no-cache-dir \
 # Install numpy first (required by other packages)
 RUN pip install --no-cache-dir numpy==1.24.3
 
-# Install ML/AI dependencies
-RUN pip install --no-cache-dir \
-    insightface==0.7.3 \
-    onnxruntime==1.17.3 \
-    opencv-python-headless
+# Install OpenCV first (needed by insightface)
+RUN pip install --no-cache-dir opencv-python-headless
+
+# Install ONNX Runtime
+RUN pip install --no-cache-dir onnxruntime==1.17.3
+
+# Install insightface (may take longer)
+RUN pip install --no-cache-dir insightface==0.7.3
 
 # Install utility dependencies
 RUN pip install --no-cache-dir \