Fix Dockerfile packages for OpenCV compatibility

Dockerfile

@@ -2,11 +2,14 @@ FROM python:3.10-slim
 
 WORKDIR /app
 
-# Install Tesseract OCR
+# Install Tesseract OCR and OpenCV dependencies
 RUN apt-get update && apt-get install -y \
     tesseract-ocr \
-    libgl1-mesa-glx \
+    libgl1 \
     libglib2.0-0 \
+    libsm6 \
+    libxext6 \
+    libxrender-dev \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy requirements and install