Add Dockerfile to build dataapi

api/fastapi/Dockerfile

@@ -0,0 +1,28 @@
+# Python builder
+# Produced a virtualenv with all the deps good to go
+
+# TODO(art): upgrade to bookworm (blocked by this
+# https://github.com/actions/setup-python/issues/721) or stop using debian to
+# have more recent base OS
+FROM python:3.11-bullseye as py-build
+
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+     && apt-get -y install --no-install-recommends python3 python3-dev
+
+RUN curl -sSL https://install.python-poetry.org | POETRY_HOME=/opt/poetry python3 -
+
+COPY . /app
+WORKDIR /app
+ENV PATH=/opt/poetry/bin:$PATH
+RUN poetry config virtualenvs.in-project true && poetry install --no-interaction --no-ansi
+
+### Actual image running on the host
+FROM python:3.11-bullseye
+
+ENV PYTHONDONTWRITEBYTECODE 1
+ENV PYTHONUNBUFFERED 1
+
+COPY --from=py-build /app /app
+WORKDIR /app
+CMD ["/app/.venv/bin/uvicorn", "dataapi.main:app", "--host", "0.0.0.0", "--port", "80"]
+EXPOSE 80