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Dockerfile: use a builder image to further optimize image size #2013

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Feb 13, 2022
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Dockerfile: use a builder image to further optimize image size #2013

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1 change: 1 addition & 0 deletions .dockerignore
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Original file line number Diff line number Diff line change
Expand Up @@ -5,3 +5,4 @@ build/
.coverage
.tox/
docs/_build
Dockerfile
27 changes: 16 additions & 11 deletions Dockerfile
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@@ -1,20 +1,25 @@
FROM python:3.9-slim
FROM python:3.9-slim as base
FROM base as builder

COPY . /build
RUN apt update && apt install -y git

# there are no wheels for some packages (geventhttpclient?) for arm64/aarch64, so we need some build dependencies there
RUN export NOWHEELS=$(arch | grep 'arm64\|aarch64') && apt update && apt install -y git && \
if [ -n "$NOWHEELS" ]; then apt install -y --no-install-recommends gcc python3-dev; fi && \
cd /build && pip install --no-cache . && \
if [ -n "$NOWHEELS" ]; then apt purge -y --auto-remove -y gcc python3-dev; fi && \
apt clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
RUN if [ -n "$(arch | grep 'arm64\|aarch64')" ]; then apt install -y --no-install-recommends gcc python3-dev; fi

EXPOSE 8089 5557
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

COPY . /build
RUN pip install /build/

FROM base
ENV PATH="/opt/venv/bin:$PATH"
COPY --from=builder /opt/venv /opt/venv

EXPOSE 8089 5557
# turn off python output buffering
ENV PYTHONUNBUFFERED=1
RUN useradd --create-home locust
USER locust
WORKDIR /home/locust
ENTRYPOINT ["locust"]

# turn off python output buffering
ENV PYTHONUNBUFFERED=1