Add git to Dockerfile for segment-anything install

backend/Dockerfile

@@ -2,7 +2,7 @@ FROM python:3.11-slim
 
 WORKDIR /app
 
-# Install system dependencies for OpenCV, rembg, and image processing
+# Install system dependencies for OpenCV, rembg, SAM, and image processing
 RUN apt-get update && apt-get install -y \
     libgl1 \
     libglib2.0-0 \
@@ -11,6 +11,7 @@ RUN apt-get update && apt-get install -y \
     libxrender-dev \
     libgomp1 \
     wget \
+    git \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy requirements