Add OpenCV system dependencies to Dockerfile

Dockerfile

@@ -4,6 +4,15 @@ FROM python:3.9-slim
 # Set the working directory in the container
 WORKDIR /app
 
+# Install system dependencies required by OpenCV and other packages
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libgl1-mesa-glx \
+    libglib2.0-0 \
+    libsm6 \
+    libxrender1 \
+    libxext6 \
+    && rm -rf /var/lib/apt/lists/*
+
 # Copy the requirements file into the container at /app
 COPY requirements.txt .