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makes install available for all users in docker image #3202

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merged 5 commits into from Aug 2, 2022
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1 change: 1 addition & 0 deletions CHANGES.md
Expand Up @@ -47,6 +47,7 @@
<!-- For example, Docker, GitHub Actions, pre-commit, editors -->

- Vim plugin: prefix messages with `Black: ` so it's clear they come from Black (#3194)
- Docker: changes the installation path to be available to non-root users (#3202)

### Output

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12 changes: 7 additions & 5 deletions Dockerfile
Expand Up @@ -2,16 +2,18 @@ FROM python:3-slim AS builder

RUN mkdir /src
COPY . /src/
RUN pip install --no-cache-dir --upgrade pip setuptools wheel \
ENV VIRTUAL_ENV=/opt/venv
RUN python -m venv $VIRTUAL_ENV
RUN . /opt/venv/bin/activate && pip install --no-cache-dir --upgrade pip setuptools wheel \
# Install build tools to compile dependencies that don't have prebuilt wheels
&& apt update && apt install -y git build-essential \
&& cd /src \
&& pip install --user --no-cache-dir .[colorama,d]
&& pip install --no-cache-dir .[colorama,d]

FROM python:3-slim

# copy only Python packages to limit the image size
COPY --from=builder /root/.local /root/.local
ENV PATH=/root/.local/bin:$PATH
COPY --from=builder /opt/venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"
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@cooperlees cooperlees Aug 1, 2022

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Will this make the PATH persistent like this? i.e.everyone who download and runs commands in this container will get this PATH prepend by default?

Can you add test output of which black for different users to show this working maybe?

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Yes, it will prepend the PATH for all users. Here's a couple examples:

# test output as host user
❯ docker run --user $(id -u):$(id -g) nborges/black:pr which black
/opt/venv/bin/black

# test output as root
❯ docker run --user 0:0 nborges/black:pr which black
/opt/venv/bin/black


CMD ["black"]
CMD ["/opt/venv/bin/black"]