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bigsan/dockerfile_from_hist.sh

Created December 6, 2020 04:39
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Dockerfile from image history
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dockerfile_from_hist.sh
# https://stackoverflow.com/questions/19104847/how-to-generate-a-dockerfile-from-an-image/50926503#50926503
docker history --no-trunc $argv | tac | tr -s ' ' | cut -d " " -f 5- | sed 's,^/bin/sh -c #(nop) ,,g' | sed 's,^/bin/sh -c,RUN,g' | sed 's, && ,\n & ,g' | sed 's,\s*[0-9]*[\.]*[0-9]*\s*[kMG]*B\s*$,,g' | head -n -1
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