Docker Utility Tools

This repository is containing several useful docker utility tools. See sections below for specific details of the tools.

Docker Image commands

This tool will output the commands used to create a Docker image. It is traversing up-to the top-most inherited Docker image. The image argument passed as argument is based on the official NAME[:TAG|@DIGEST] convention.

Usage

Bash usage:

$ ./docker_image_commands.sh <image1> <image2> <...>

Docker usage:

$ docker build -t docker_image_commands .
$ docker run docker-image-commands <image1> <image2> <...>

Examples

Get ubuntu:14.04 commands:

$ ./docker_image_commands.sh ubuntu:14.04
Docker image 'library/ubuntu:14.04' is created with the following commands:
	/bin/sh -c #(nop) ADD file:84479dd43530d358e10fc77876bb6f83e71e1367d959e423f2471e0057c4b424 in /
	/bin/sh -c 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
	/bin/sh -c rm -rf /var/lib/apt/lists/*
	/bin/sh -c sed -i 's/^#\s*\(deb.*universe\)$/\1/g' /etc/apt/sources.list
	/bin/sh -c mkdir -p /run/systemd && echo 'docker' > /run/systemd/container
	/bin/sh -c #(nop)  CMD ["/bin/bash"]