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use --no-cache-dir flag to pip in dockerfiles to save space #38

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using "--no-cache-dir" flag in pip install ,make sure downloaded packages
by pip don't cached on system . This is a best practice which make sure
to fetch from repo instead of using local cached one . Further , in case
of Docker Containers , by restricting 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 [email protected]

@amr-mokhtar amr-mokhtar requested a review from a team April 7, 2021 21:20
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Agree with change, as it is one time during container creation only.

abjyoti
abjyoti previously approved these changes Apr 8, 2021
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abjyoti commented Apr 8, 2021

The build fails in CICD are due to older version of open-ness (20.12) used for build. The shell check errors reported there are resolved in openness 21.03 release. See if you can build this against 21.03 to overcome the CICD shell check errors blocking the merge.

using "--no-cache-dir" flag in pip install ,make sure downloaded packages
by pip don't cached on system . This is a best practice which make sure
to fetch from repo instead of using local cached one . Further , in case
of Docker Containers , by restricting 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 <[email protected]>
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3 participants