Add UV_VERSION build arg to Dockerfile for easier version overriding

Co-authored-by: samppanja <21281919+samppanja@users.noreply.github.com>

Author: Copilot

Dockerfile

@@ -1,12 +1,14 @@
 # syntax=docker/dockerfile:1
 FROM ubuntu:24.04
 
+ARG UV_VERSION=0.6.3
+
 WORKDIR /app
 
 ENV PATH="/root/.local/bin/:$PATH"
 
 RUN apt-get update && apt-get install -y pipx ca-certificates libmagic1 \
-    && pipx install "uv==0.6.3" \
+    && pipx install "uv==${UV_VERSION}" \
     && apt-get clean && rm -rf /var/lib/apt/lists/*
 
 COPY pyproject.toml uv.lock ./