Update Ubuntu Dockerfile

.docker/Dockerfile.ubuntu24

@@ -1,7 +1,7 @@
 # SPDX-FileCopyrightText: 2024 James R. Barlow
 # SPDX-License-Identifier: MPL-2.0
 
-FROM ubuntu:24.04 as base
+FROM ubuntu:24.04 AS base
 
 ENV LANG=C.UTF-8
 ENV TZ=UTC
@@ -11,21 +11,24 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python3 \
   python-is-python3
 
-FROM base as builder
+FROM base AS builder
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
   python3-pip \
   python3-venv \
-  git
+  git \
+  curl
 
 COPY . /app
 
 WORKDIR /app
 
-RUN python -m venv .venv
+RUN curl -LsSf https://astral.sh/uv/0.4.27/install.sh | sh
 
-RUN . .venv/bin/activate \
-    && python -m pip install --no-cache-dir .[test,webservice,watcher]
+ENV UV_COMPILE_BYTECODE=1 UV_LINK_MODE=copy
+
+# Instead of restarting the shell, use uv directly from its installed location.
+RUN /root/.cargo/bin/uv sync --extra test --extra webservice --extra watcher
 
 FROM base
 
@@ -46,17 +49,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 WORKDIR /app
 
-COPY --from=builder /usr/local/lib/ /usr/local/lib/
-COPY --from=builder /usr/local/bin/ /usr/local/bin/
-
-COPY --from=builder /app/.venv/ /app/.venv/
-
-COPY --from=builder /app/misc/webservice.py /app/
-COPY --from=builder /app/misc/watcher.py /app/
-
-# Copy minimal project files to get the test suite.
-COPY --from=builder /app/pyproject.toml /app/README.md /app/
-COPY --from=builder /app/tests /app/tests
+COPY --from=builder --chown=app:app /app /app
 
 ENV PATH="/app/.venv/bin:${PATH}"