一种瑞士刀工具，可用于与Docker一起工作的人
docker-scripts的Python项目详细描述
功能
当前功能列表：
- 挤压
- 列出Docker图像中的层
安装
来自源代码
$ git clone https://github.com/goldmann/docker-scripts.git $ cd docker-scripts $ pip install --user .
来自PYPI
$ pip install docker-scripts
用法
$ docker-scripts -h
usage: docker-scripts [-h] [-v] {squash,layers} ...
Set of helpers scripts fo Docker
optional arguments:
-h, --help show this help message and exit
-v, --verbose Verbose output
Available commands:
{squash,layers}
squash Squash layers in the specified image
layers Show layers in the specified image
许可证
麻省理工学院
层
一个简单的脚本，显示构建图像的所有层。
层使用
$ docker-scripts layers -h usage: docker-scripts layers [-h] [-c] [-d] [-m] [-t] image positional arguments: image ID of the layer or image ID or image name optional arguments: -h, --help show this help message and exit -c, --commands Show commands executed to create the layer (if any) -d, --dockerfile Create Dockerfile out of the layers [EXPERIMENTAL!] -m, --machine Machine parseable output -t, --tags Print layer tags if available
示例
默认输出
$ docker-scripts layers jboss/wildfly:latest
511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158
└─ 782cf93a8f16d3016dae352188cd5cfedb6a15c37d4dbd704399f02d1bb89dab
└─ 7d3f07f8de5fb3a20c6cb1e4447773a5741e3641c1aa093366eaa0fc690c6417
└─ 1ef0a50fe8b1394d3626a7624a58b58cff9560ddb503743099a56bbe95ab481a
└─ 20a1abe1d9bfb9b1e46d5411abd5a38b6104a323b7c4fb5c0f1f161b8f7278c2
└─ cd5bb934bb6755e910d19ac3ae4cfd09221aa2f98c3fbb51a7486991364dc1ae
└─ 379edb00ab0764276787ea777243990da697f2f93acb5d9166ff73ad01511a87
└─ 4d37cbbfc67dd508e682a5431a99d8c1feba1bd8352ffd3ea794463d9cfa81cc
└─ 2ea8562cac7c25a308b4565b66d4f7e11a1d2137a599ef2b32ed23c78f0a0378
└─ 7759146eab1a3aa5ba5ed12483d03e64a6bf1061a383d5713a5e21fc40554457
└─ b17a20d6f5f8e7ed0a1dba277acd3f854c531b0476b03d63a8f0df4caf78c763
└─ e02bdb6c4ed5436da02c958d302af5f06c1ebb1821791f60d45e190ebb55130f
└─ 72d585299bb5c5c1c326422cfffadc93d8bb4020f35bf072b2d91d287967807a
└─ 90832e1f0bb9e9f98ecd42f6df6b124c1e6768babaddc23d646cd75c7b2fddec
└─ b2b7d0c353b9b7500d23d2670c99abf35c4285a5f396df7ef70386848b45d162
└─ 3759d5cffae63d6ddc9f2db9142403ad39bd54e305bb5060ae860aac9b9dec1d
└─ 5c98b1e90cdcdb322601091f1f8654bc551015caa9ec41da040ef9a1d8466839
└─ 8ac46a315e1ef48cfbe30e9d15242f8f73b322e8ede54c30d93f6859708d48f7
└─ 2ac466861ca121d4c5e17970f4939cc3df3755a7fd90a6d11542b7432c03e215
使用命令输出
$ docker-scripts layers -c jboss/wildfly:latest
511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158
└─ 782cf93a8f16d3016dae352188cd5cfedb6a15c37d4dbd704399f02d1bb89dab [/bin/sh -c #(nop) MAINTAINER Lokesh Mandvekar <lsm5@fedoraproject.org> - ./buildcontainers.sh]
└─ 7d3f07f8de5fb3a20c6cb1e4447773a5741e3641c1aa093366eaa0fc690c6417 [/bin/sh -c #(nop) ADD file:285fdeab65d637727f6b79392a309135494d2e6046c6cc2fbd2f23e43eaac69c in /]
└─ 1ef0a50fe8b1394d3626a7624a58b58cff9560ddb503743099a56bbe95ab481a [/bin/sh -c #(nop) MAINTAINER Marek Goldmann <mgoldman@redhat.com>]
└─ 20a1abe1d9bfb9b1e46d5411abd5a38b6104a323b7c4fb5c0f1f161b8f7278c2 [/bin/sh -c yum -y update && yum clean all]
└─ cd5bb934bb6755e910d19ac3ae4cfd09221aa2f98c3fbb51a7486991364dc1ae [/bin/sh -c yum -y install xmlstarlet saxon augeas bsdtar unzip && yum clean all]
└─ 379edb00ab0764276787ea777243990da697f2f93acb5d9166ff73ad01511a87 [/bin/sh -c groupadd -r jboss -g 1000 && useradd -u 1000 -r -g jboss -m -d /opt/jboss -s /sbin/nologin -c "JBoss user" jboss]
└─ 4d37cbbfc67dd508e682a5431a99d8c1feba1bd8352ffd3ea794463d9cfa81cc [/bin/sh -c #(nop) WORKDIR /opt/jboss]
└─ 2ea8562cac7c25a308b4565b66d4f7e11a1d2137a599ef2b32ed23c78f0a0378 [/bin/sh -c #(nop) USER jboss]
└─ 7759146eab1a3aa5ba5ed12483d03e64a6bf1061a383d5713a5e21fc40554457 [/bin/sh -c #(nop) MAINTAINER Marek Goldmann <mgoldman@redhat.com>]
└─ b17a20d6f5f8e7ed0a1dba277acd3f854c531b0476b03d63a8f0df4caf78c763 [/bin/sh -c #(nop) USER root]
└─ e02bdb6c4ed5436da02c958d302af5f06c1ebb1821791f60d45e190ebb55130f [/bin/sh -c yum -y install java-1.7.0-openjdk-devel && yum clean all]
└─ 72d585299bb5c5c1c326422cfffadc93d8bb4020f35bf072b2d91d287967807a [/bin/sh -c #(nop) USER jboss]
└─ 90832e1f0bb9e9f98ecd42f6df6b124c1e6768babaddc23d646cd75c7b2fddec [/bin/sh -c #(nop) ENV JAVA_HOME=/usr/lib/jvm/java]
└─ b2b7d0c353b9b7500d23d2670c99abf35c4285a5f396df7ef70386848b45d162 [/bin/sh -c #(nop) ENV WILDFLY_VERSION=8.2.0.Final]
└─ 3759d5cffae63d6ddc9f2db9142403ad39bd54e305bb5060ae860aac9b9dec1d [/bin/sh -c cd $HOME && curl http://download.jboss.org/wildfly/$WILDFLY_VERSION/wildfly-$WILDFLY_VERSION.tar.gz | tar zx && mv $HOME/wildfly-$WILDFLY_VERSION $HOME/wildfly]
└─ 5c98b1e90cdcdb322601091f1f8654bc551015caa9ec41da040ef9a1d8466839 [/bin/sh -c #(nop) ENV JBOSS_HOME=/opt/jboss/wildfly]
└─ 8ac46a315e1ef48cfbe30e9d15242f8f73b322e8ede54c30d93f6859708d48f7 [/bin/sh -c #(nop) EXPOSE 8080/tcp]
└─ 2ac466861ca121d4c5e17970f4939cc3df3755a7fd90a6d11542b7432c03e215 [/bin/sh -c #(nop) CMD [/opt/jboss/wildfly/bin/standalone.sh -b 0.0.0.0]]
机器可分析输出
$ python layers.py jboss/torquebox -c -m
511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158|
ff75b0852d47a18f23ebf57d2ef7974f470a754c534fa44dfb94d5deec69e6c0|/bin/sh -c #(nop) MAINTAINER Lokesh Mandvekar <lsm5@fedoraproject.org> - ./buildcontainers.sh
5cc8a068a7372437b21bdb4bafd547cedf4d1ea41fa624aad8df4d8e22ea9ab7|/bin/sh -c #(nop) ADD file:18d3d85c0c8e9ba35d7ae7d1596d97a838ff268a21250819f0fe7278282d1df5 in /
e6903a263bcc2c8034ad03691163ecaf3511d211e3855c4667a8390cc1518344|/bin/sh -c yum -y update && yum clean all
a6bda5b9c9ba17dda855e787fb3f25e9b4c1f2cb75e41c3121ea001b9f5ea5ab|/bin/sh -c yum -y install java-1.7.0-openjdk-devel unzip && yum clean all
ab89a864acfaecf8e69fe26e0fd3177494eb1e7ef468708c8035437577d041f4|/bin/sh -c #(nop) ENV TORQUEBOX_VERSION=3.1.1
f267f0b474a2037c3ba0d185f3a7ac20a9b1e1967955745fcd5ee9abb0c5da4c|/bin/sh -c cd /opt && curl -L https://d2t70pdxfgqbmq.cloudfront.net/release/org/torquebox/torquebox-dist/$TORQUEBOX_VERSION/torquebox-dist-$TORQUEBOX_VERSION-bin.zip -o torquebox.zip && unzip -q torquebox.zip && rm torquebox.zip
889e1cbf6afb1aec5cd8cd145188c42c06ec4dc7e9c91c67f86b7bb72d9c6979|/bin/sh -c groupadd -r torquebox -g 434 && useradd -u 432 -r -g torquebox -d /opt/torquebox-$TORQUEBOX_VERSION -s /sbin/nologin -c "TorqueBox user" torquebox
26d480777a056bc6ddc6f9eb5cb2f5d962eae5aca1880e4a308eef4d8837949b|/bin/sh -c chown -R torquebox:torquebox /opt/torquebox-$TORQUEBOX_VERSION
904472e47182e3b34c944cc0a4e9e21a096afd64c913e47f3be314fa023239d7|/bin/sh -c #(nop) EXPOSE map[8080/tcp:{}]
4ca0e3ea46ff37e49831c6bb27e9488f48b8db0fc4f6d7eda70bd4a04408daf7|/bin/sh -c #(nop) USER torquebox
b621dc5d4989677e62bf8ee0316f557156b5cba2b551e8bbb6368fb5920ae3aa|/bin/sh -c #(nop) CMD [/bin/sh -c /opt/torquebox-$TORQUEBOX_VERSION/jboss/bin/standalone.sh -b 0.0.0.0]
挤压
压榨…这是一个很长的故事。它并没有合并上震波尽管有很多 公开的公关。
挤压有助于在逻辑层中组织图像。而不是 具有具有多个（几乎所有情况下）不必要层的图像- 我们可以控制图像的结构。
挤压使用
$ docker-scripts squash -h
usage: docker-scripts squash [-h] [-f FROM_LAYER] [-t TAG] [--tmp-dir TMP_DIR]
image
positional arguments:
image Image to be squashed
optional arguments:
-h, --help show this help message and exit
-f FROM_LAYER, --from-layer FROM_LAYER
ID of the layer or image ID or image name. If not
specified will squash up to last layer (FROM
instruction)
-t TAG, --tag TAG Specify the tag to be used for the new image. By
default it'll be set to 'image' argument
--tmp-dir TMP_DIR Temporary directory to be used
示例
我们从这样的图像开始：
$ docker-scripts layers -t jboss/wildfly
511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158
└─ 782cf93a8f16d3016dae352188cd5cfedb6a15c37d4dbd704399f02d1bb89dab
└─ 7d3f07f8de5fb3a20c6cb1e4447773a5741e3641c1aa093366eaa0fc690c6417
└─ 1ef0a50fe8b1394d3626a7624a58b58cff9560ddb503743099a56bbe95ab481a
└─ 20a1abe1d9bfb9b1e46d5411abd5a38b6104a323b7c4fb5c0f1f161b8f7278c2
└─ cd5bb934bb6755e910d19ac3ae4cfd09221aa2f98c3fbb51a7486991364dc1ae
└─ 379edb00ab0764276787ea777243990da697f2f93acb5d9166ff73ad01511a87
└─ 4d37cbbfc67dd508e682a5431a99d8c1feba1bd8352ffd3ea794463d9cfa81cc
└─ 2ea8562cac7c25a308b4565b66d4f7e11a1d2137a599ef2b32ed23c78f0a0378 [u'docker.io/jboss/base:latest']
└─ 7759146eab1a3aa5ba5ed12483d03e64a6bf1061a383d5713a5e21fc40554457
└─ b17a20d6f5f8e7ed0a1dba277acd3f854c531b0476b03d63a8f0df4caf78c763
└─ e02bdb6c4ed5436da02c958d302af5f06c1ebb1821791f60d45e190ebb55130f
└─ 72d585299bb5c5c1c326422cfffadc93d8bb4020f35bf072b2d91d287967807a
└─ 90832e1f0bb9e9f98ecd42f6df6b124c1e6768babaddc23d646cd75c7b2fddec [u'docker.io/jboss/base-jdk:7']
└─ b2b7d0c353b9b7500d23d2670c99abf35c4285a5f396df7ef70386848b45d162
└─ 3759d5cffae63d6ddc9f2db9142403ad39bd54e305bb5060ae860aac9b9dec1d
└─ 5c98b1e90cdcdb322601091f1f8654bc551015caa9ec41da040ef9a1d8466839
└─ 8ac46a315e1ef48cfbe30e9d15242f8f73b322e8ede54c30d93f6859708d48f7
└─ 2ac466861ca121d4c5e17970f4939cc3df3755a7fd90a6d11542b7432c03e215 [u'docker.io/jboss/wildfly:latest']
我们想把所有的层压缩到jboss/base:latest 形象。
$ docker-scripts squash jboss/wildfly -f jboss/base:latest -t jboss/wildfly:squashed 2015-05-11 10:23:35,602 root INFO Squashing image 'jboss/wildfly'... 2015-05-11 10:23:35,857 root INFO Old image has 19 layers 2015-05-11 10:23:35,857 root INFO Attempting to squash from layer 2ea8562cac7c25a308b4565b66d4f7e11a1d2137a599ef2b32ed23c78f0a0378... 2015-05-11 10:23:35,857 root INFO Checking if squashing is necessary... 2015-05-11 10:23:35,857 root INFO We have 10 layers to squash 2015-05-11 10:23:35,858 root INFO Saving image 2ac466861ca121d4c5e17970f4939cc3df3755a7fd90a6d11542b7432c03e215 to /tmp/tmp-docker-squash-3NmyuU/image.tar file... 2015-05-11 10:24:51,357 root INFO Image saved! 2015-05-11 10:24:51,361 root INFO Unpacking /tmp/tmp-docker-squash-3NmyuU/image.tar tar file to /tmp/tmp-docker-squash-3NmyuU/old directory 2015-05-11 10:25:09,890 root INFO Archive unpacked! 2015-05-11 10:25:09,891 root INFO New layer ID for squashed content will be: b7e845026f73f67ebeb59ed1958d021aa79c069145d66b1233b7e9ba9fffa729 2015-05-11 10:25:09,891 root INFO Starting squashing... 2015-05-11 10:25:09,891 root INFO Squashing layer 2ac466861ca121d4c5e17970f4939cc3df3755a7fd90a6d11542b7432c03e215... 2015-05-11 10:25:09,892 root INFO Squashing layer 8ac46a315e1ef48cfbe30e9d15242f8f73b322e8ede54c30d93f6859708d48f7... 2015-05-11 10:25:09,892 root INFO Squashing layer 5c98b1e90cdcdb322601091f1f8654bc551015caa9ec41da040ef9a1d8466839... 2015-05-11 10:25:09,893 root INFO Squashing layer 3759d5cffae63d6ddc9f2db9142403ad39bd54e305bb5060ae860aac9b9dec1d... 2015-05-11 10:25:10,592 root INFO Squashing layer b2b7d0c353b9b7500d23d2670c99abf35c4285a5f396df7ef70386848b45d162... 2015-05-11 10:25:10,593 root INFO Squashing layer 90832e1f0bb9e9f98ecd42f6df6b124c1e6768babaddc23d646cd75c7b2fddec... 2015-05-11 10:25:10,594 root INFO Squashing layer 72d585299bb5c5c1c326422cfffadc93d8bb4020f35bf072b2d91d287967807a... 2015-05-11 10:25:10,594 root INFO Squashing layer e02bdb6c4ed5436da02c958d302af5f06c1ebb1821791f60d45e190ebb55130f... 2015-05-11 10:25:16,796 root INFO Squashing layer b17a20d6f5f8e7ed0a1dba277acd3f854c531b0476b03d63a8f0df4caf78c763... 2015-05-11 10:25:16,799 root INFO Squashing layer 7759146eab1a3aa5ba5ed12483d03e64a6bf1061a383d5713a5e21fc40554457... 2015-05-11 10:25:17,334 root INFO Loading squashed image... 2015-05-11 10:26:14,505 root INFO Image loaded! 2015-05-11 10:26:14,720 root INFO Finished, image registered as 'jboss/wildfly:squashed'
我们现在可以确认层结构：
$ docker-scripts layers -t jboss/wildfly:squashed
511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158
└─ 782cf93a8f16d3016dae352188cd5cfedb6a15c37d4dbd704399f02d1bb89dab
└─ 7d3f07f8de5fb3a20c6cb1e4447773a5741e3641c1aa093366eaa0fc690c6417
└─ 1ef0a50fe8b1394d3626a7624a58b58cff9560ddb503743099a56bbe95ab481a
└─ 20a1abe1d9bfb9b1e46d5411abd5a38b6104a323b7c4fb5c0f1f161b8f7278c2
└─ cd5bb934bb6755e910d19ac3ae4cfd09221aa2f98c3fbb51a7486991364dc1ae
└─ 379edb00ab0764276787ea777243990da697f2f93acb5d9166ff73ad01511a87
└─ 4d37cbbfc67dd508e682a5431a99d8c1feba1bd8352ffd3ea794463d9cfa81cc
└─ 2ea8562cac7c25a308b4565b66d4f7e11a1d2137a599ef2b32ed23c78f0a0378 [u'docker.io/jboss/base:latest']
└─ b7e845026f73f67ebeb59ed1958d021aa79c069145d66b1233b7e9ba9fffa729 [u'jboss/wildfly:squashed']
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