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jstangroome/diff-docker-images.sh

Last active August 29, 2015 14:16
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Compare the list of files changed in two docker images with file sizes
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diff-docker-images.sh
sudo docker run --rm imagebase /usr/bin/find / -printf '%s\t%p\n' | sort -k2 >/tmp/imagebase
sudo docker run --rm imagenext /usr/bin/find / -printf '%s\t%p\n' | sort -k2 >/tmp/imagenext
# list removed files by size
diff -u /tmp/imagebase /tmp/imagenext | grep '^-' | cut -c 2- | sort -n
# list added files by size
diff -u /tmp/imagebase /tmp/imagenext | grep '^+' | cut -c 2- | sort -n
# list removals and adds by size
diff -u /tmp/imagebase /tmp/imagenext | grep '^[-+]' | sort -n -k1.2
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