update uv handling in dockerfile

Dockerfile

@@ -11,30 +11,33 @@ RUN npm run build
 FROM python:3.12-slim
 WORKDIR /app
 
-# Create non-root user
-RUN useradd -m -u 1000 user
+# Install system dependencies required for UV, Git and Node.js
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    curl ca-certificates git netcat-openbsd && \
+    curl -fsSL https://deb.nodesource.com/setup_18.x | bash - && \
+    apt-get install -y nodejs && \
+    rm -rf /var/lib/apt/lists/*
 
-# Install uv instead of poetry
-RUN pip install uv
+# Install UV (fast Python dependency manager)
+RUN curl -LsSf https://astral.sh/uv/install.sh | sh && \
+    mv /root/.local/bin/uv /usr/local/bin/uv && chmod +x /usr/local/bin/uv
 
-# Install uvicorn and fastapi explicitly
-RUN pip install uvicorn fastapi
+# Verify UV installation
+RUN uv --version
+
+# Create non-root user
+RUN useradd -m -u 1000 user
 
 # Create and configure cache directory
 RUN mkdir -p /app/.cache && \
     chown -R user:user /app
 
-# Install git and other dependencies
-RUN apt-get update && apt-get install -y \
-    git \
-    curl \
-    netcat-openbsd \
-    && curl -fsSL https://deb.nodesource.com/setup_18.x | bash - \
-    && apt-get install -y nodejs \
-    && rm -rf /var/lib/apt/lists/*
-
-# Copy and install backend dependencies
+# Copy backend requirements
 COPY backend/pyproject.toml ./
+
+# Install all dependencies explicitly
+RUN pip install fastapi uvicorn
+# Install project dependencies
 RUN uv pip install -e . --system
 
 # Copy backend code