Use opencv-python-headless to avoid GUI dependencies

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

Dockerfile

@@ -2,17 +2,6 @@ FROM python:3.9-slim
 
 WORKDIR /app
 
-# Install system dependencies for OpenCV
-RUN apt-get update && apt-get install -y \
-    libgl1-mesa-glx \
-    libglib2.0-0 \
-    libsm6 \
-    libxext6 \
-    libxrender-dev \
-    libgomp1 \
-    libgthread-2.0-0 \
-    && rm -rf /var/lib/apt/lists/*
-
 # Copy requirements first to leverage Docker cache
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt

requirements.txt

@@ -1,5 +1,5 @@
 ultralytics==8.2.0
 gradio==4.36.1
-opencv-python==4.9.0.80
+opencv-python-headless==4.9.0.80
 pyyaml==6.0.1
 numpy==1.26.4