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Grammar corrections in Best Practices

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Douglas Naphas 2018-07-14 07:46:47 -04:00 committed by GitHub
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develop/develop-images/dockerfile_best-practices.md
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@ -428,12 +428,12 @@ recommendations.
s3cmd=1.1.* \ s3cmd=1.1.* \
&& rm -rf /var/lib/apt/lists/* && rm -rf /var/lib/apt/lists/*
The `s3cmd` instructions specifies a version `1.1.*`. If the image previously The `s3cmd` argument specifies a version `1.1.*`. If the image previously
used an older version, specifying the new one causes a cache bust of `apt-get used an older version, specifying the new one causes a cache bust of `apt-get
update` and ensure the installation of the new version. Listing packages on update` and ensures the installation of the new version. Listing packages on
each line can also prevent mistakes in package duplication. each line can also prevent mistakes in package duplication.
In addition, when you clean up the apt cache by removing `/var/lib/apt/lists` In addition, when you clean up the apt cache by removing `/var/lib/apt/lists` it
reduces the image size, since the apt cache is not stored in a layer. Since the reduces the image size, since the apt cache is not stored in a layer. Since the
`RUN` statement starts with `apt-get update`, the package cache is always `RUN` statement starts with `apt-get update`, the package cache is always
refreshed prior to `apt-get install`. refreshed prior to `apt-get install`.