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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>
35 lines
1014 B
Docker
35 lines
1014 B
Docker
#
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# Dockerfile for oled-arm
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#
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FROM easypi/alpine-arm
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MAINTAINER EasyPi Software Foundation
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RUN set -xe \
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&& apk add --no-cache build-base \
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curl \
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linux-headers \
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python \
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python-dev \
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freetype \
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freetype-dev \
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jpeg \
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jpeg-dev \
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&& curl https://bootstrap.pypa.io/get-pip.py | python \
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&& pip install --no-cache-dir luma.oled \
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&& apk del --purge build-base \
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curl \
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linux-headers \
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python-dev \
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freetype-dev \
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jpeg-dev
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WORKDIR /code
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RUN set -xe \
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&& apk add --no-cache curl tar \
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&& curl -sSL https://github.com/rm-hull/luma.examples/archive/master.tar.gz | tar xz --strip 2 luma.examples-master/examples \
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&& apk del --purge curl tar
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ENTRYPOINT ["python"]
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