fix: official Python 3.14.1, add uv (#405)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: DerekRoberts

backend-py/Dockerfile

@@ -1,5 +1,8 @@
-# Use the official Python image with UV pre-installed
-FROM ghcr.io/astral-sh/uv:python3.14-bookworm-slim AS build
+# Use Python 3.14.1 base image and install uv
+FROM python:3.14.1-slim-bookworm AS build
+
+# Install uv
+RUN pip install --no-cache-dir uv
 
 # Set environment variables for UV
 ENV UV_COMPILE_BYTECODE=1 \
@@ -27,7 +30,7 @@ COPY src ./src
 RUN uv sync --frozen --no-dev
 
 # Production stage
-FROM python:3.14.2-slim-bookworm AS deploy
+FROM python:3.14.1-slim-bookworm AS deploy
 
 # Set environment variables
 ENV PYTHONUNBUFFERED=1 \