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FROM python:3.15-slim AS builder
RUN mkdir /src
COPY . /src/
ENV VIRTUAL_ENV=/opt/venv
ENV HATCH_BUILD_HOOKS_ENABLE=1
# Install build tools to compile black + dependencies
RUN apt update && apt install -y build-essential git python3-dev
ENV PATH="$VIRTUAL_ENV/bin:$PATH"
RUN python -m venv $VIRTUAL_ENV
RUN cd /src \
# virtualenv 20.39 uses pip 26.0 - use `ENV ...=P2D` once we bump virtualenv/hatch
&& export PIP_UPLOADED_PRIOR_TO=$(date -u -d "2 days ago" +%Y-%m-%dT%H:%M:%SZ) \
&& pip install --no-cache-dir --upgrade pip \
&& pip install --no-cache-dir --group hatch \
&& hatch build -t wheel \
&& pip install --no-cache-dir dist/*-cp* \
&& pip install black[colorama,d,uvloop]
FROM python:3.15-slim
# copy only Python packages to limit the image size
COPY --from=builder /opt/venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"
CMD ["/opt/venv/bin/black"]
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