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dockerfiles/scrapyd/onbuild/Dockerfile
Pratik raj b113da5d19 chore: Use --no-cache-dir flag to pip in Dockerfiles, to save space
Using "--no-cache-dir" flag in pip install ,make sure dowloaded packages
by pip don't cached on system . This is a best practise which make sure
to fetch ftom repo instead of using local cached one . Further , in case
of Docker Containers , by restricing caching , we can reduce image size.
In term of stats , it depends upon the number of python packages
multiplied by their respective size . e.g for heavy packages with a lot
of dependencies it reduce a lot by don't caching pip packages.

Further , more detail information can be found at

https://medium.com/sciforce/strategies-of-docker-images-optimization-2ca9cc5719b6

Signed-off-by: Pratik Raj <rajpratik71@gmail.com>
2021-07-02 01:02:49 +05:30

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Docker

#
# Dockerfile for scrapyd-onbuild (python3)
#
FROM vimagick/scrapyd:py3
MAINTAINER EasyPi Software Foundation
ONBUILD ADD ./*.txt /etc/scrapyd/
ONBUILD RUN cd /etc/scrapyd; \
[ -f packages.txt -o -f dependencies.txt ] && apt-get update; \
[ -f packages.txt ] && xargs -r apt-get install -y < packages.txt; \
[ -f dependencies.txt ] && xargs -r apt-get install -y < dependencies.txt; \
[ -f requirements.txt ] && pip install --no-cache-dir -r requirements.txt; \
[ -f dependencies.txt ] && xargs -r apt-get purge -y --auto-remove < dependencies.txt; \
[ -f packages.txt -o -f dependencies.txt ] && rm -rf /var/lib/apt/lists/*