Initial commit

Dockerfile

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+FROM python:3-alpine
+RUN apk add --no-cache git
+RUN pip install --no-cache-dir build twine
+WORKDIR /src
+ENTRYPOINT git clone "$0" . \
+        && python3 -m build --outdir /dist \
+        && sha256sum /dist/* \
+        && read -p 'Upload these files? [y/N] ' upload \
+        && [ "${upload}" = y -o "${upload}" = Y ] \
+        && TWINE_USERNAME=__token__ twine upload /dist/*

README.md

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+A tiny Docker image to build a Python package and upload it to PyPI.
+
+Usage:
+
+    docker build -t python-package-build-upload:latest .
+    docker run -v mypkg-dist:/dist --rm -ti -e TWINE_PASSWORD=token python-package-build-upload:latest https://example.org/mypkg.git
+
+What it does:
+
+1. Clones the repo.
+2. Runs `python3 -m build --outdir /dist` on it. Mounting a volume to `/dist` is optional but recommended if you'd like to keep the original files.
+3. Calculates SHA-256 hashes of the dists.
+4. Asks you to verify that they should be uploaded to PyPI.
+5. Uploads, if confirmed.
+
+The `TWINE_PASSWORD` value must be an API token valid for the project. Username/password authentication is not supported.