एक बैश समाधान:
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
कदम से कदम स्पष्टीकरण:
tac : reverse the file
tr -s ' ' trim multiple whitespaces into 1
cut -d " " -f 5- remove the first fields (until X months/years ago)
sed 's,^/bin/sh -c #(nop) ,,g' remove /bin/sh calls for ENV,LABEL...
sed 's,^/bin/sh -c,RUN,g' remove /bin/sh calls for RUN
sed 's, && ,\n & ,g' pretty print multi command lines following Docker best practices
sed 's,\s*[0-9]*[\.]*[0-9]*\s*[kMG]*B\s*$,,g' remove layer size information
head -n -1 remove last line ("SIZE COMMENT" in this case)
उदाहरण:
~ dih ubuntu:18.04
ADD file:28c0771e44ff530dba3f237024acc38e8ec9293d60f0e44c8c78536c12f13a0b in /
RUN set -xe
&& echo '#!/bin/sh' > /usr/sbin/policy-rc.d
&& echo 'exit 101' >> /usr/sbin/policy-rc.d
&& chmod +x /usr/sbin/policy-rc.d
&& dpkg-divert --local --rename --add /sbin/initctl
&& cp -a /usr/sbin/policy-rc.d /sbin/initctl
&& sed -i 's/^exit.*/exit 0/' /sbin/initctl
&& echo 'force-unsafe-io' > /etc/dpkg/dpkg.cfg.d/docker-apt-speedup
&& echo 'DPkg::Post-Invoke { "rm -f /var/cache/apt/archives/*.deb /var/cache/apt/archives/partial/*.deb /var/cache/apt/*.bin || true"; };' > /etc/apt/apt.conf.d/docker-clean
&& echo 'APT::Update::Post-Invoke { "rm -f /var/cache/apt/archives/*.deb /var/cache/apt/archives/partial/*.deb /var/cache/apt/*.bin || true"; };' >> /etc/apt/apt.conf.d/docker-clean
&& echo 'Dir::Cache::pkgcache ""; Dir::Cache::srcpkgcache "";' >> /etc/apt/apt.conf.d/docker-clean
&& echo 'Acquire::Languages "none";' > /etc/apt/apt.conf.d/docker-no-languages
&& echo 'Acquire::GzipIndexes "true"; Acquire::CompressionTypes::Order:: "gz";' > /etc/apt/apt.conf.d/docker-gzip-indexes
&& echo 'Apt::AutoRemove::SuggestsImportant "false";' > /etc/apt/apt.conf.d/docker-autoremove-suggests
RUN rm -rf /var/lib/apt/lists/*
RUN sed -i 's/^#\s*\(deb.*universe\)$/\1/g' /etc/apt/sources.list
RUN mkdir -p /run/systemd
&& echo 'docker' > /run/systemd/container
CMD ["/bin/bash"]