add docker files

client/Dockerfile

@@ -0,0 +1,31 @@
+# Dockerfile.ui
+FROM python:3.13-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+RUN apt-get update && apt-get install -y --no-install-recommends curl \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# Install all deps from unified requirements.txt
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy UI code + assets
+COPY client/ ./client/
+COPY assets/ ./assets/
+COPY uploads/ ./uploads/
+
+RUN mkdir -p /app/uploads
+
+ENV FLET_ENTRY=client/main.py \
+    APP_PORT=5000 \
+    API_BASE_URL=https://api.example.com
+
+EXPOSE 5000
+
+HEALTHCHECK --interval=30s --timeout=5s --retries=3 CMD curl -fsS http://localhost:5000/ || exit 1
+
+CMD ["python", "client/main.py"]