Derive the version from git with verri

Use verri's strawberry flavour through hatchling's code version source, so
versions look like 2026.10.21.0: the HEAD commit date plus the number of
earlier commits that day.

Container images build the sdist in a separate stage that has the git
repository, so they get the same version instead of a +vcs.missing one.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Containerfile

@@ -35,6 +35,21 @@ RUN yarn install --frozen-lockfile --network-timeout 600000
 RUN yarn build && test -f dist/index.html
 
 
+# Builds peo's sdist from the git repository, because verri derives the version
+# from the git history (see version.py). The unpacked sdist carries that version
+# in PKG-INFO, so the images below can be built without git.
+FROM ${SLIM_BASE_IMAGE} AS sdist
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends git python3-build python3-venv \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY . /src
+RUN python3 -m build --sdist --outdir /dist /src \
+    && mkdir /peo \
+    && tar -xzf /dist/peo-*.tar.gz --strip-components=1 -C /peo
+
+
 FROM ${SLIM_BASE_IMAGE} AS slim
 
 RUN apt-get update \
@@ -45,8 +60,7 @@ RUN apt-get update \
 # notices: see THIRD_PARTY_NOTICES.md.
 COPY container/collect-python-licenses.py /tmp/
 COPY container/licenses/ /tmp/licenses/
-COPY pyproject.toml README.md LICENSE /tmp/peo/
-COPY peo /tmp/peo/peo
+COPY --from=sdist /peo /tmp/peo
 RUN python3 -m venv --system-site-packages /opt/peo/venv \
     && /opt/peo/venv/bin/pip install --no-cache-dir "/tmp/peo[browser]" \
     && /opt/peo/venv/bin/python /tmp/collect-python-licenses.py \
@@ -94,8 +108,7 @@ RUN /opt/pgadmin/bin/python /tmp/collect-python-licenses.py \
         /usr/share/doc/peo/pgadmin-python-licenses /tmp/licenses
 
 # peo itself, using Debian's psycopg and the other dependencies from PyPI.
-COPY pyproject.toml README.md LICENSE /tmp/peo/
-COPY peo /tmp/peo/peo
+COPY --from=sdist /peo /tmp/peo
 RUN python3 -m venv --system-site-packages /opt/peo/venv \
     && /opt/peo/venv/bin/pip install --no-cache-dir "/tmp/peo[browser]" \
     && /opt/peo/venv/bin/python /tmp/collect-python-licenses.py \