add python packaging fluff

python/Dockerfile

@@ -0,0 +1,18 @@
+# Dockerfile to generate PyPI packages. Needs to be run from the opm-common root folder
+# Example use:
+# sudo docker build -t manylinux2014_opm:built . -f python/Dockerfile
+
+FROM quay.io/pypa/manylinux_2_28_x86_64 AS stage1
+ARG version_tag=""
+ARG build_jobs=4
+WORKDIR /tmp/opm
+RUN echo "Using package version tag: $version_tag"
+ADD . .
+RUN /bin/bash setup-docker-image.sh
+FROM stage1 AS stage2
+RUN /bin/bash build-deps.sh $build_jobs
+FROM stage2 AS stage3
+RUN /bin/bash generate-pypi-package.sh $version_tag $build_jobs
+
+FROM scratch AS export_stage
+COPY --from=stage3 /tmp/opm/wheelhouse .