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Last active August 29, 2015 14:13
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Dockerの基本操作をCentOS 7で確認 その3〜Dockerfileからイメージを作成〜 ref: http://qiita.com/smile-0yen/items/934907388cde9b29b8f7
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file0.txt
# "#"で始まる行はコメント行とみなされます。
# Dockerfileは必ずベースとなるイメージを指定するFROMから書きます。
FROM ubuntu:14.04
# MAINTAINERには文字通りDockerfile作成者を記載します。
MAINTAINER smile-0yen smile0yen.1024@gmail.com
# RUNは指定されたコマンドをコンテナ内で実行し、結果をイメージとして保存します。
RUN apt-get install ruby -y
# EXPOSEはコンテナの外に対して開くポートを指定します。
# 親ホストのどのポートにマッピングするかはコンテナ起動時に決定します。
EXPOSE 8080
# WORKDIRによってこの行以降のRUN及びCMDを実行するディレクトリを指定できます。
WORKDIR /opt
# CMDにはコンテナが起動したあとに実行されるコマンドを指定します。
CMD ruby -run -e httpd . -p 8080
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file1.txt
$ sudo docker build -t web_server .
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file10.txt
[{
"Architecture": "amd64",
"Author": "smile-0yen smile0yen.1024@gmail.com",
"Comment": "",
"Config": {
"AttachStderr": false,
"AttachStdin": false,
"AttachStdout": false,
"Cmd": [
"/bin/sh",
"-c",
"ruby -run -e httpd . -p 8080"
],
"CpuShares": 0,
"Cpuset": "",
"Domainname": "",
"Entrypoint": null,
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
],
"ExposedPorts": {
"8080/tcp": {}
},
（以下略）
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file2.txt
$ sudo docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
web_server latest 455927c8e660 10 minutes ago 210 MB
(以下略)
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file3.txt
$ sudo docker run -d -v /tmp/docker:/opt -p 80:8080 web_server
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file4.txt
$ sudo docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
fb5df2b423ea web_server:latest "/bin/sh -c 'ruby -r 18 minutes ago Up 18 minutes 0.0.0.0:80->8080/tcp boring_hopper
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file5.txt
$ sudo docker logs --tail="3" fb5df
[2015-01-13 15:14:11] WARN Could not determine content-length of response body. Set content-length of the response or set Response#chunked = true
10.0.2.2 - - [13/Jan/2015:15:14:11 UTC] "GET /test.txt HTTP/1.1" 304 0
- -> /test.txt
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file6.txt
$ sudo docker history web_server
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file7.txt
$ sudo docker history web_server
IMAGE CREATED CREATED BY SIZE
455927c8e660 3 days ago /bin/sh -c #(nop) CMD [/bin/sh -c ruby -run - 0 B
9307eadf28da 3 days ago /bin/sh -c #(nop) WORKDIR /opt 0 B
c2bbe183f761 3 days ago /bin/sh -c #(nop) EXPOSE map[8080/tcp:{}] 0 B
c75722c696c8 3 days ago /bin/sh -c apt-get install ruby -y 17.29 MB
e82e1a53528e 3 days ago /bin/sh -c #(nop) MAINTAINER smile-0yen smile 0 B
ed5a78b7b42b 3 weeks ago /bin/sh -c #(nop) CMD [/bin/bash] 0 B
8c4b1edcceea 3 weeks ago /bin/sh -c sed -i 's/^#\s*\(deb.*universe\)$/ 1.895 kB
9a4594fe74ea 3 weeks ago /bin/sh -c echo '#!/bin/sh' > /usr/sbin/polic 194.5 kB
fe95bf7d5f50 3 weeks ago /bin/sh -c #(nop) ADD file:c032cb16120c7533b5 192.5 MB
511136ea3c5a 19 months ago 0 B
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file8.txt
$ sudo docker history --no-trunc web_server
IMAGE CREATED CREATED BY SIZE
455927c8e6600f79ba6dda8e03709051a251a1dfb96f634b95959e8bfb0d5174 3 days ago /bin/sh -c #(nop) CMD [/bin/sh -c ruby -run -e httpd . -p 8080] 0 B
9307eadf28dadd4f21ea14024343c69de924d6766494fa73015aec8daf43ae1f 3 days ago /bin/sh -c #(nop) WORKDIR /opt 0 B
c2bbe183f7613773d0dc03670730acc2def499e85efa97074132698918a739d8 3 days ago /bin/sh -c #(nop) EXPOSE map[8080/tcp:{}] 0 B
c75722c696c8ecb42d8d9fc31f0b260845b881a59cc7881fe1761fc7360ba776 3 days ago /bin/sh -c apt-get install ruby -y 17.29 MB
e82e1a53528eaf869bca0a16ea9423853c077d06b0b1bfccfdd6a207790281f2 3 days ago /bin/sh -c #(nop) MAINTAINER smile-0yen smile0yen.1024@gmail.com 0 B
ed5a78b7b42bde1e3e4c2996e02da778882dca78f8919cbd0deb6694803edec3 3 weeks ago /bin/sh -c #(nop) CMD [/bin/bash] 0 B
8c4b1edcceea5c11f0a43de6c990036cffbd63f5590cba0075042c66cd90d948 3 weeks ago /bin/sh -c sed -i 's/^#\s*\(deb.*universe\)$/\1/g' /etc/apt/sources.list 1.895 kB
9a4594fe74ea4c14e642b871556f1460f6d332350bf3c772e76ed0059444ff19 3 weeks ago /bin/sh -c 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 194.5 kB
fe95bf7d5f5090fdaf5c5d442f9f05211f9cb338107a41ff10c7a46be4be2dea 3 weeks ago /bin/sh -c #(nop) ADD file:c032cb16120c7533b582d0c03b3e19314915f7674c000eda0cd36853005a880e in / 192.5 MB
511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158 19 months ago 0 B
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file9.txt
$ sudo docker inspect web_server
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