Update Dockerfile to use uv:bookworm-slim base image and use uv pip command

Dockerfile

@@ -1,5 +1,5 @@
-FROM python:3.13-slim
-
+# FROM python:3.13-slim
+FROM ghcr.io/astral-sh/uv:bookworm-slim
 # Set proper terminal environment for Textual
 ENV TERM=xterm-256color
 ENV COLORTERM=truecolor
@@ -19,7 +19,7 @@ WORKDIR /app
 
 # Copy requirements and install Python dependencies
 COPY requirements.txt .
-RUN pip install --no-cache-dir -r requirements.txt
+RUN uv pip install --no-cache-dir -r requirements.txt
 
 # Copy application files
 COPY serve.py .