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It may not be as easy to read, but combining the three RUN statements together saves you some substantial megabytes:

    ctop_deb_orig        latest              149596353f88        4 seconds ago       187 MB
    ctop_deb_new        latest              d01f954b3adc        2 minutes ago       139 MB

This is because each RUN statement is creating a whole new layer in the image, so you're actually hanging on to all the stuff you were trying to get rid of!

Scott
This commit is contained in:
Scott Hansen 2017-03-09 20:38:01 -08:00 committed by GitHub
parent b2184bbc6d
commit 07f95a04b0
1 changed files with 6 additions and 10 deletions
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@ -2,16 +2,12 @@ FROM debian:jessie
RUN BUILD_PACKAGES="curl wget" && \
apt-get update && \
apt-get install -y $BUILD_PACKAGES
RUN wget $(curl -s https://api.github.com/repos/bcicen/ctop/releases/latest | \
grep 'browser_' | cut -d\" -f4 | \
grep 'linux-amd64') \
-O /usr/local/bin/ctop && \
chmod +x /usr/local/bin/ctop
RUN AUTO_ADDED_PACKAGES=`apt-mark showauto` && \
apt-get install -y $BUILD_PACKAGES && \
wget $(curl -s https://api.github.com/repos/bcicen/ctop/releases/latest | \
grep 'browser_' | cut -d\" -f4 |grep 'linux-amd64') \
-O /usr/local/bin/ctop && \
chmod +x /usr/local/bin/ctop &&
AUTO_ADDED_PACKAGES=`apt-mark showauto` && \
apt-get remove --purge -y $BUILD_PACKAGES $AUTO_ADDED_PACKAGES
CMD ["ctop"]