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Docker: remove VOLUME directive (#11997)

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The driver for this is to stop Complement complaining about it, but as far as I can tell it was pointless and needed to go away anyway.

I'm a bit unclear about what exactly VOLUME does, but I think what it means is that, if you don't override it with an explicit -v argument, then docker run will create a temporary volume, and copy things into it. The temporary volume is then deleted when the container finishes.

That only sounds useful if your image has something to copy into it (otherwise you may as well just use the default root filesystem), and our image notably doesn't copy anything into /data.

So... this wasn't doing anything, except annoying Complement?
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Richard van der Hoff 2022-02-15 13:59:15 +00:00 committed by GitHub
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commit 5598556b77
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changelog.d/11997.docker Normal file
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@ -0,0 +1 @@
The docker image no longer automatically creates a temporary volume at `/data`. This is not expected to affect normal usage.

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docker/Dockerfile
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@ -98,8 +98,6 @@ COPY --from=builder /install /usr/local
COPY ./docker/start.py /start.py
COPY ./docker/conf /conf
VOLUME ["/data"]
EXPOSE 8008/tcp 8009/tcp 8448/tcp
ENTRYPOINT ["/start.py"]