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# A docker file that caches the cargo index for the cryptography deps. This is
# mainly useful for multi-arch builds where fetching the index from the internet
# fails for 32bit archs built on 64 bit platforms.
ARG PYTHON_VERSION=3.8
FROM --platform=$BUILDPLATFORM docker.io/python:${PYTHON_VERSION}-slim as builder
RUN apt-get update && apt-get install -y \
rustc \
&& rm -rf /var/lib/apt/lists/*
RUN pip download --no-binary cryptography --no-deps cryptography
RUN tar -xf cryptography*.tar.gz --wildcards cryptography*/src/rust/
RUN cd cryptography*/src/rust && cargo fetch
FROM docker.io/python:${PYTHON_VERSION}-slim
COPY --from=builder /root/.cargo /root/.cargo
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