110_DockerFile
目录
DockerFile简介
查看centos是如何做的
:::info
docker仓库：https://hub.docker.com/
:::
DockerFile基础知识
DockerFile的指令
实战测试：创建自己的centos
参考
实战
编写dockerfile文件
[root@ecs-214025 admin]# cd /home/
[root@ecs-214025 home]# ls
admin ceshi docker-test-volume eqroot mysql ruoyi
[root@ecs-214025 home]# mkdir dockerfile
[root@ecs-214025 home]# cd dockerfile/
[root@ecs-214025 dockerfile]# ls
[root@ecs-214025 dockerfile]# vim mydockerfile-centos
FROM centos
MAINTAINER zhyq<wl3pbzhyq@163.com>
ENV MYPATH /usr/local
WORKDIR $MYPATH
RUN yum -y install vim
RUN yum -y install net-tools
EXPOSE 80
CMD echo $MYPATH
CMD echo "---end---"
CMD /bin/bash
[root@ecs-214025 dockerfile]# cat mydockerfile-centos
FROM centos
MAINTAINER zhyq<wl3pbzhyq@163.com>
ENV MYPATH /usr/local
WORKDIR $MYPATH
RUN yum -y install vim
RUN yum -y install net-tools
EXPOSE 80
CMD echo $MYPATH
CMD echo "---end---"
CMD /bin/bash
[root@ecs-214025 dockerfile]#
生成镜像
:::info
docker build -f mydockerfile-centos -t mycentos:0.1 .
注意：末尾的“.”必须写
:::
:::info
生成镜像报错：Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist
报错原因：Centos8于2021年年底停止了服务，大家再在使用yum源安装时候，会出现错误
参考文档：https://blog.csdn.net/qq_43762191/article/details/124474377
:::
[root@ecs-214025 dockerfile]# docker build -f mydockerfile-centos -t mycentos:0.1 .
Sending build context to Docker daemon 2.048kB
Step 1/10 : FROM centos
---> 5d0da3dc9764
Step 2/10 : MAINTAINER zhyq<wl3pbzhyq@163.com>
---> Running in d5adfe8510e1
Removing intermediate container d5adfe8510e1
---> c8b979a47824
Step 3/10 : ENV MYPATH /usr/local
---> Running in 95efee165e86
Removing intermediate container 95efee165e86
---> 78f0232e4ab9
Step 4/10 : WORKDIR $MYPATH
---> Running in 2923ea7111bd
Removing intermediate container 2923ea7111bd
---> 64c28bbdf9b3
Step 5/10 : RUN yum -y install vim
---> Running in e1e03945f75d
CentOS Linux 8 - AppStream 47 B/s | 38 B 00:00
Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist
The command '/bin/sh -c yum -y install vim' returned a non-zero code: 1
[root@ecs-214025 dockerfile]#
:::info
解决方法：使用centos:7作为基础镜像
FROM centos:7
:::
[root@ecs-214025 dockerfile]# vim mydockerfile-centos
FROM centos:7
MAINTAINER zhyq<wl3pbzhyq@163.com>
ENV MYPATH /usr/local
WORKDIR $MYPATH
RUN yum -y install vim
RUN yum -y install net-tools
EXPOSE 80
CMD echo $MYPATH
CMD echo "---end---"
CMD /bin/bash
[root@ecs-214025 dockerfile]# docker build -f mydockerfile-centos -t mycentos:0.1 .
Sending build context to Docker daemon 2.048kB
Step 1/10 : FROM centos:7
---> eeb6ee3f44bd
Step 2/10 : MAINTAINER zhyq<wl3pbzhyq@163.com>
---> Running in 8240d25e94e8
Removing intermediate container 8240d25e94e8
---> 71997e6af231
Step 3/10 : ENV MYPATH /usr/local
---> Running in 6c1a75869072
Removing intermediate container 6c1a75869072
---> b8a05fb667b6
Step 4/10 : WORKDIR $MYPATH
---> Running in 0f00c3843d11
Removing intermediate container 0f00c3843d11
---> b79aa9b42c1b
Step 5/10 : RUN yum -y install vim
---> Running in ba98100f1fd0
Loaded plugins: fastestmirror, ovl
Determining fastest mirrors
* base: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.tuna.tsinghua.edu.cn
* updates: mirrors.tuna.tsinghua.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package vim-enhanced.x86_64 2:7.4.629-8.el7_9 will be installed
--> Processing Dependency: vim-common = 2:7.4.629-8.el7_9 for package: 2:vim-enhanced-7.4.629-8.el7_9.x86_64
--> Processing Dependency: which for package: 2:vim-enhanced-7.4.629-8.el7_9.x86_64
--> Processing Dependency: perl(:MODULE_COMPAT_5.16.3) for package: 2:vim-enhanced-7.4.629-8.el7_9.x86_64
--> Processing Dependency: libperl.so()(64bit) for package: 2:vim-enhanced-7.4.629-8.el7_9.x86_64
--> Processing Dependency: libgpm.so.2()(64bit) for package: 2:vim-enhanced-7.4.629-8.el7_9.x86_64
--> Running transaction check
---> Package gpm-libs.x86_64 0:1.20.7-6.el7 will be installed
---> Package perl.x86_64 4:5.16.3-299.el7_9 will be installed
--> Processing Dependency: perl(Socket) >= 1.3 for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Scalar::Util) >= 1.10 for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl-macros for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(threads::shared) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(threads) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(constant) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Time::Local) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Time::HiRes) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Storable) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Socket) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Scalar::Util) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Pod::Simple::XHTML) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Pod::Simple::Search) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Getopt::Long) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Filter::Util::Call) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(File::Temp) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(File::Spec::Unix) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(File::Spec::Functions) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(File::Spec) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(File::Path) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Exporter) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Cwd) for package: 4:perl-5.16.3-299.el7_9.x86_64
--> Processing Dependency: perl(Carp) for package: 4:perl-5.16.3-299.el7_9.x86_64
---> Package perl-libs.x86_64 4:5.16.3-299.el7_9 will be installed
---> Package vim-common.x86_64 2:7.4.629-8.el7_9 will be installed
--> Processing Dependency: vim-filesystem for package: 2:vim-common-7.4.629-8.el7_9.x86_64
---> Package which.x86_64 0:2.20-7.el7 will be installed
--> Running transaction check
---> Package perl-Carp.noarch 0:1.26-244.el7 will be installed
---> Package perl-Exporter.noarch 0:5.68-3.el7 will be installed
---> Package perl-File-Path.noarch 0:2.09-2.el7 will be installed
---> Package perl-File-Temp.noarch 0:0.23.01-3.el7 will be installed
---> Package perl-Filter.x86_64 0:1.49-3.el7 will be installed
---> Package perl-Getopt-Long.noarch 0:2.40-3.el7 will be installed
--> Processing Dependency: perl(Pod::Usage) >= 1.14 for package: perl-Getopt-Long-2.40-3.el7.noarch
--> Processing Dependency: perl(Text::ParseWords) for package: perl-Getopt-Long-2.40-3.el7.noarch
---> Package perl-PathTools.x86_64 0:3.40-5.el7 will be installed
---> Package perl-Pod-Simple.noarch 1:3.28-4.el7 will be installed
--> Processing Dependency: perl(Pod::Escapes) >= 1.04 for package: 1:perl-Pod-Simple-3.28-4.el7.noarch
--> Processing Dependency: perl(Encode) for package: 1:perl-Pod-Simple-3.28-4.el7.noarch
---> Package perl-Scalar-List-Utils.x86_64 0:1.27-248.el7 will be installed
---> Package perl-Socket.x86_64 0:2.010-5.el7 will be installed
---> Package perl-Storable.x86_64 0:2.45-3.el7 will be installed
---> Package perl-Time-HiRes.x86_64 4:1.9725-3.el7 will be installed
---> Package perl-Time-Local.noarch 0:1.2300-2.el7 will be installed
---> Package perl-constant.noarch 0:1.27-2.el7 will be installed
---> Package perl-macros.x86_64 4:5.16.3-299.el7_9 will be installed
---> Package perl-threads.x86_64 0:1.87-4.el7 will be installed
---> Package perl-threads-shared.x86_64 0:1.43-6.el7 will be installed
---> Package vim-filesystem.x86_64 2:7.4.629-8.el7_9 will be installed
--> Running transaction check
---> Package perl-Encode.x86_64 0:2.51-7.el7 will be installed
---> Package perl-Pod-Escapes.noarch 1:1.04-299.el7_9 will be installed
---> Package perl-Pod-Usage.noarch 0:1.63-3.el7 will be installed
--> Processing Dependency: perl(Pod::Text) >= 3.15 for package: perl-Pod-Usage-1.63-3.el7.noarch
--> Processing Dependency: perl-Pod-Perldoc for package: perl-Pod-Usage-1.63-3.el7.noarch
---> Package perl-Text-ParseWords.noarch 0:3.29-4.el7 will be installed
--> Running transaction check
---> Package perl-Pod-Perldoc.noarch 0:3.20-4.el7 will be installed
--> Processing Dependency: perl(parent) for package: perl-Pod-Perldoc-3.20-4.el7.noarch
--> Processing Dependency: perl(HTTP::Tiny) for package: perl-Pod-Perldoc-3.20-4.el7.noarch
--> Processing Dependency: groff-base for package: perl-Pod-Perldoc-3.20-4.el7.noarch
---> Package perl-podlators.noarch 0:2.5.1-3.el7 will be installed
--> Running transaction check
---> Package groff-base.x86_64 0:1.22.2-8.el7 will be installed
---> Package perl-HTTP-Tiny.noarch 0:0.033-3.el7 will be installed
---> Package perl-parent.noarch 1:0.225-244.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
vim-enhanced x86_64 2:7.4.629-8.el7_9 updates 1.1 M
Installing for dependencies:
gpm-libs x86_64 1.20.7-6.el7 base 32 k
groff-base x86_64 1.22.2-8.el7 base 942 k
perl x86_64 4:5.16.3-299.el7_9 updates 8.0 M
perl-Carp noarch 1.26-244.el7 base 19 k
perl-Encode x86_64 2.51-7.el7 base 1.5 M
perl-Exporter noarch 5.68-3.el7 base 28 k
perl-File-Path noarch 2.09-2.el7 base 26 k
perl-File-Temp noarch 0.23.01-3.el7 base 56 k
perl-Filter x86_64 1.49-3.el7 base 76 k
perl-Getopt-Long noarch 2.40-3.el7 base 56 k
perl-HTTP-Tiny noarch 0.033-3.el7 base 38 k
perl-PathTools x86_64 3.40-5.el7 base 82 k
perl-Pod-Escapes noarch 1:1.04-299.el7_9 updates 52 k
perl-Pod-Perldoc noarch 3.20-4.el7 base 87 k
perl-Pod-Simple noarch 1:3.28-4.el7 base 216 k
perl-Pod-Usage noarch 1.63-3.el7 base 27 k
perl-Scalar-List-Utils x86_64 1.27-248.el7 base 36 k
perl-Socket x86_64 2.010-5.el7 base 49 k
perl-Storable x86_64 2.45-3.el7 base 77 k
perl-Text-ParseWords noarch 3.29-4.el7 base 14 k
perl-Time-HiRes x86_64 4:1.9725-3.el7 base 45 k
perl-Time-Local noarch 1.2300-2.el7 base 24 k
perl-constant noarch 1.27-2.el7 base 19 k
perl-libs x86_64 4:5.16.3-299.el7_9 updates 690 k
perl-macros x86_64 4:5.16.3-299.el7_9 updates 44 k
perl-parent noarch 1:0.225-244.el7 base 12 k
perl-podlators noarch 2.5.1-3.el7 base 112 k
perl-threads x86_64 1.87-4.el7 base 49 k
perl-threads-shared x86_64 1.43-6.el7 base 39 k
vim-common x86_64 2:7.4.629-8.el7_9 updates 5.9 M
vim-filesystem x86_64 2:7.4.629-8.el7_9 updates 11 k
which x86_64 2.20-7.el7 base 41 k
Transaction Summary
================================================================================
Install 1 Package (+32 Dependent packages)
Total download size: 19 M
Installed size: 63 M
Downloading packages:
warning: /var/cache/yum/x86_64/7/base/packages/gpm-libs-1.20.7-6.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Public key for gpm-libs-1.20.7-6.el7.x86_64.rpm is not installed
Public key for perl-5.16.3-299.el7_9.x86_64.rpm is not installed
--------------------------------------------------------------------------------
Total 12 MB/s | 19 MB 00:01
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Importing GPG key 0xF4A80EB5:
Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>"
Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5
Package : centos-release-7-9.2009.0.el7.centos.x86_64 (@CentOS)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : gpm-libs-1.20.7-6.el7.x86_64 1/33
Installing : 2:vim-filesystem-7.4.629-8.el7_9.x86_64 2/33
Installing : 2:vim-common-7.4.629-8.el7_9.x86_64 3/33
Installing : which-2.20-7.el7.x86_64 4/33
install-info: No such file or directory for /usr/share/info/which.info.gz
Installing : groff-base-1.22.2-8.el7.x86_64 5/33
Installing : 1:perl-parent-0.225-244.el7.noarch 6/33
Installing : perl-HTTP-Tiny-0.033-3.el7.noarch 7/33
Installing : perl-podlators-2.5.1-3.el7.noarch 8/33
Installing : perl-Pod-Perldoc-3.20-4.el7.noarch 9/33
Installing : 1:perl-Pod-Escapes-1.04-299.el7_9.noarch 10/33
Installing : perl-Encode-2.51-7.el7.x86_64 11/33
Installing : perl-Text-ParseWords-3.29-4.el7.noarch 12/33
Installing : perl-Pod-Usage-1.63-3.el7.noarch 13/33
Installing : 4:perl-macros-5.16.3-299.el7_9.x86_64 14/33
Installing : perl-Storable-2.45-3.el7.x86_64 15/33
Installing : perl-Exporter-5.68-3.el7.noarch 16/33
Installing : perl-constant-1.27-2.el7.noarch 17/33
Installing : perl-Socket-2.010-5.el7.x86_64 18/33
Installing : perl-Time-Local-1.2300-2.el7.noarch 19/33
Installing : perl-Carp-1.26-244.el7.noarch 20/33
Installing : perl-PathTools-3.40-5.el7.x86_64 21/33
Installing : perl-Scalar-List-Utils-1.27-248.el7.x86_64 22/33
Installing : 1:perl-Pod-Simple-3.28-4.el7.noarch 23/33
Installing : perl-File-Temp-0.23.01-3.el7.noarch 24/33
Installing : perl-File-Path-2.09-2.el7.noarch 25/33
Installing : perl-threads-shared-1.43-6.el7.x86_64 26/33
Installing : perl-threads-1.87-4.el7.x86_64 27/33
Installing : 4:perl-Time-HiRes-1.9725-3.el7.x86_64 28/33
Installing : perl-Filter-1.49-3.el7.x86_64 29/33
Installing : 4:perl-libs-5.16.3-299.el7_9.x86_64 30/33
Installing : perl-Getopt-Long-2.40-3.el7.noarch 31/33
Installing : 4:perl-5.16.3-299.el7_9.x86_64 32/33
Installing : 2:vim-enhanced-7.4.629-8.el7_9.x86_64 33/33
Verifying : perl-HTTP-Tiny-0.033-3.el7.noarch 1/33
Verifying : perl-threads-shared-1.43-6.el7.x86_64 2/33
Verifying : perl-Storable-2.45-3.el7.x86_64 3/33
Verifying : groff-base-1.22.2-8.el7.x86_64 4/33
Verifying : perl-Exporter-5.68-3.el7.noarch 5/33
Verifying : perl-constant-1.27-2.el7.noarch 6/33
Verifying : perl-PathTools-3.40-5.el7.x86_64 7/33
Verifying : 4:perl-macros-5.16.3-299.el7_9.x86_64 8/33
Verifying : 2:vim-enhanced-7.4.629-8.el7_9.x86_64 9/33
Verifying : 1:perl-parent-0.225-244.el7.noarch 10/33
Verifying : perl-Socket-2.010-5.el7.x86_64 11/33
Verifying : which-2.20-7.el7.x86_64 12/33
Verifying : 2:vim-filesystem-7.4.629-8.el7_9.x86_64 13/33
Verifying : perl-File-Temp-0.23.01-3.el7.noarch 14/33
Verifying : 1:perl-Pod-Simple-3.28-4.el7.noarch 15/33
Verifying : perl-Time-Local-1.2300-2.el7.noarch 16/33
Verifying : 1:perl-Pod-Escapes-1.04-299.el7_9.noarch 17/33
Verifying : perl-Carp-1.26-244.el7.noarch 18/33
Verifying : 2:vim-common-7.4.629-8.el7_9.x86_64 19/33
Verifying : perl-Scalar-List-Utils-1.27-248.el7.x86_64 20/33
Verifying : perl-Pod-Usage-1.63-3.el7.noarch 21/33
Verifying : perl-Encode-2.51-7.el7.x86_64 22/33
Verifying : perl-Pod-Perldoc-3.20-4.el7.noarch 23/33
Verifying : perl-podlators-2.5.1-3.el7.noarch 24/33
Verifying : 4:perl-5.16.3-299.el7_9.x86_64 25/33
Verifying : perl-File-Path-2.09-2.el7.noarch 26/33
Verifying : perl-threads-1.87-4.el7.x86_64 27/33
Verifying : 4:perl-Time-HiRes-1.9725-3.el7.x86_64 28/33
Verifying : gpm-libs-1.20.7-6.el7.x86_64 29/33
Verifying : perl-Filter-1.49-3.el7.x86_64 30/33
Verifying : perl-Getopt-Long-2.40-3.el7.noarch 31/33
Verifying : perl-Text-ParseWords-3.29-4.el7.noarch 32/33
Verifying : 4:perl-libs-5.16.3-299.el7_9.x86_64 33/33
Installed:
vim-enhanced.x86_64 2:7.4.629-8.el7_9
Dependency Installed:
gpm-libs.x86_64 0:1.20.7-6.el7
groff-base.x86_64 0:1.22.2-8.el7
perl.x86_64 4:5.16.3-299.el7_9
perl-Carp.noarch 0:1.26-244.el7
perl-Encode.x86_64 0:2.51-7.el7
perl-Exporter.noarch 0:5.68-3.el7
perl-File-Path.noarch 0:2.09-2.el7
perl-File-Temp.noarch 0:0.23.01-3.el7
perl-Filter.x86_64 0:1.49-3.el7
perl-Getopt-Long.noarch 0:2.40-3.el7
perl-HTTP-Tiny.noarch 0:0.033-3.el7
perl-PathTools.x86_64 0:3.40-5.el7
perl-Pod-Escapes.noarch 1:1.04-299.el7_9
perl-Pod-Perldoc.noarch 0:3.20-4.el7
perl-Pod-Simple.noarch 1:3.28-4.el7
perl-Pod-Usage.noarch 0:1.63-3.el7
perl-Scalar-List-Utils.x86_64 0:1.27-248.el7
perl-Socket.x86_64 0:2.010-5.el7
perl-Storable.x86_64 0:2.45-3.el7
perl-Text-ParseWords.noarch 0:3.29-4.el7
perl-Time-HiRes.x86_64 4:1.9725-3.el7
perl-Time-Local.noarch 0:1.2300-2.el7
perl-constant.noarch 0:1.27-2.el7
perl-libs.x86_64 4:5.16.3-299.el7_9
perl-macros.x86_64 4:5.16.3-299.el7_9
perl-parent.noarch 1:0.225-244.el7
perl-podlators.noarch 0:2.5.1-3.el7
perl-threads.x86_64 0:1.87-4.el7
perl-threads-shared.x86_64 0:1.43-6.el7
vim-common.x86_64 2:7.4.629-8.el7_9
vim-filesystem.x86_64 2:7.4.629-8.el7_9
which.x86_64 0:2.20-7.el7
Complete!
Removing intermediate container ba98100f1fd0
---> c79580842faa
Step 6/10 : RUN yum -y install net-tools
---> Running in 24ff150b496b
Loaded plugins: fastestmirror, ovl
Loading mirror speeds from cached hostfile
* base: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.tuna.tsinghua.edu.cn
* updates: mirrors.tuna.tsinghua.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package net-tools.x86_64 0:2.0-0.25.20131004git.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
net-tools x86_64 2.0-0.25.20131004git.el7 base 306 k
Transaction Summary
================================================================================
Install 1 Package
Total download size: 306 k
Installed size: 917 k
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : net-tools-2.0-0.25.20131004git.el7.x86_64 1/1
Verifying : net-tools-2.0-0.25.20131004git.el7.x86_64 1/1
Installed:
net-tools.x86_64 0:2.0-0.25.20131004git.el7
Complete!
Removing intermediate container 24ff150b496b
---> 1363a8c961a6
Step 7/10 : EXPOSE 80
---> Running in 20492594d7e8
Removing intermediate container 20492594d7e8
---> 00fec2557bc2
Step 8/10 : CMD echo $MYPATH
---> Running in e6784276d43f
Removing intermediate container e6784276d43f
---> d15ea1fa5e06
Step 9/10 : CMD echo "---end---"
---> Running in 94195fd8c3f4
Removing intermediate container 94195fd8c3f4
---> a4b40dca3b65
Step 10/10 : CMD /bin/bash
---> Running in ac00ab083e22
Removing intermediate container ac00ab083e22
---> 16006c333b6a
Successfully built 16006c333b6a
Successfully tagged mycentos:0.1
[root@ecs-214025 dockerfile]#
测试运行
[root@ecs-214025 dockerfile]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
mycentos 0.1 16006c333b6a 8 minutes ago 612MB
<none> <none> 64c28bbdf9b3 29 minutes ago 231MB
zhyq/centos 1.0 f5a290dd6158 2 days ago 231MB
tomcat02 1.0 e843b1f37600 2 days ago 485MB
mysql 5.7 efa50097efbd 7 days ago 462MB
nginx latest 55f4b40fe486 12 days ago 142MB
mysql latest 968083d5be36 12 days ago 524MB
tomcat latest 4813a0e5f815 3 weeks ago 480MB
tomcat 9.0 bfb414f2cf9e 3 weeks ago 480MB
portainer/portainer latest 12b0b8dced14 8 weeks ago 75.4MB
hello-world latest feb5d9fea6a5 9 months ago 13.3kB
centos 7 eeb6ee3f44bd 9 months ago 204MB
centos latest 5d0da3dc9764 9 months ago 231MB
elasticsearch 7.6.2 f29a1ee41030 2 years ago 791MB
[root@ecs-214025 dockerfile]# docker run -it mycentos:0.1
[root@07c314ec28e9 local]# pwd
/usr/local
[root@07c314ec28e9 local]# vim test
[root@07c314ec28e9 local]# cat test
test vim
[root@07c314ec28e9 local]#
docker history 查看镜像变更历史
:::info
docker history 查看镜像变更历史
可以学习镜像是怎么做的
:::
[root@ecs-214025 dockerfile]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
mycentos 0.1 16006c333b6a 21 minutes ago 612MB
<none> <none> 64c28bbdf9b3 41 minutes ago 231MB
zhyq/centos 1.0 f5a290dd6158 2 days ago 231MB
tomcat02 1.0 e843b1f37600 2 days ago 485MB
mysql 5.7 efa50097efbd 7 days ago 462MB
nginx latest 55f4b40fe486 12 days ago 142MB
mysql latest 968083d5be36 12 days ago 524MB
tomcat latest 4813a0e5f815 3 weeks ago 480MB
tomcat 9.0 bfb414f2cf9e 3 weeks ago 480MB
portainer/portainer latest 12b0b8dced14 8 weeks ago 75.4MB
hello-world latest feb5d9fea6a5 9 months ago 13.3kB
centos 7 eeb6ee3f44bd 9 months ago 204MB
centos latest 5d0da3dc9764 9 months ago 231MB
elasticsearch 7.6.2 f29a1ee41030 2 years ago 791MB
[root@ecs-214025 dockerfile]# docker history 16006c333b6a
IMAGE CREATED CREATED BY SIZE COMMENT
16006c333b6a 21 minutes ago /bin/sh -c #(nop) CMD ["/bin/sh" "-c" "/bin… 0B
a4b40dca3b65 21 minutes ago /bin/sh -c #(nop) CMD ["/bin/sh" "-c" "echo… 0B
d15ea1fa5e06 21 minutes ago /bin/sh -c #(nop) CMD ["/bin/sh" "-c" "echo… 0B
00fec2557bc2 21 minutes ago /bin/sh -c #(nop) EXPOSE 80 0B
1363a8c961a6 21 minutes ago /bin/sh -c yum -y install net-tools 177MB
c79580842faa 21 minutes ago /bin/sh -c yum -y install vim 232MB
b79aa9b42c1b 22 minutes ago /bin/sh -c #(nop) WORKDIR /usr/local 0B
b8a05fb667b6 22 minutes ago /bin/sh -c #(nop) ENV MYPATH=/usr/local 0B
71997e6af231 22 minutes ago /bin/sh -c #(nop) MAINTAINER zhyq<wl3pbzhyq… 0B
eeb6ee3f44bd 9 months ago /bin/sh -c #(nop) CMD ["/bin/bash"] 0B
<missing> 9 months ago /bin/sh -c #(nop) LABEL org.label-schema.sc… 0B
<missing> 9 months ago /bin/sh -c #(nop) ADD file:b3ebbe8bd304723d4… 204MB
[root@ecs-214025 dockerfile]# docker history efa50097efbd
IMAGE CREATED CREATED BY SIZE COMMENT
efa50097efbd 7 days ago /bin/sh -c #(nop) CMD ["mysqld"] 0B
<missing> 7 days ago /bin/sh -c #(nop) EXPOSE 3306 33060 0B
<missing> 7 days ago /bin/sh -c #(nop) ENTRYPOINT ["docker-entry… 0B
<missing> 7 days ago /bin/sh -c ln -s usr/local/bin/docker-entryp… 34B
<missing> 7 days ago /bin/sh -c #(nop) COPY file:d27cf504fa76fb5a… 13.6kB
<missing> 7 days ago /bin/sh -c #(nop) VOLUME [/var/lib/mysql] 0B
<missing> 7 days ago /bin/sh -c { echo mysql-community-server m… 325MB
<missing> 7 days ago /bin/sh -c echo 'deb [ signed-by=/etc/apt/ke… 97B
<missing> 7 days ago /bin/sh -c #(nop) ENV MYSQL_VERSION=5.7.38-… 0B
<missing> 7 days ago /bin/sh -c #(nop) ENV MYSQL_MAJOR=5.7 0B
<missing> 7 days ago /bin/sh -c set -eux; key='859BE8D7C586F5384… 2.29kB
<missing> 7 days ago /bin/sh -c set -eux; apt-get update; apt-g… 53.7MB
<missing> 12 days ago /bin/sh -c mkdir /docker-entrypoint-initdb.d 0B
<missing> 12 days ago /bin/sh -c set -eux; savedAptMark="$(apt-ma… 4.06MB
<missing> 12 days ago /bin/sh -c #(nop) ENV GOSU_VERSION=1.14 0B
<missing> 12 days ago /bin/sh -c apt-get update && apt-get install… 9.34MB
<missing> 12 days ago /bin/sh -c groupadd -r mysql && useradd -r -… 329kB
<missing> 12 days ago /bin/sh -c #(nop) CMD ["bash"] 0B
<missing> 12 days ago /bin/sh -c #(nop) ADD file:0ae121f9805d31a4a… 69.3MB
[root@ecs-214025 dockerfile]# docker history 55f4b40fe486
IMAGE CREATED CREATED BY SIZE COMMENT
55f4b40fe486 12 days ago /bin/sh -c #(nop) CMD ["nginx" "-g" "daemon… 0B
<missing> 12 days ago /bin/sh -c #(nop) STOPSIGNAL SIGQUIT 0B
<missing> 12 days ago /bin/sh -c #(nop) EXPOSE 80 0B
<missing> 12 days ago /bin/sh -c #(nop) ENTRYPOINT ["/docker-entr… 0B
<missing> 12 days ago /bin/sh -c #(nop) COPY file:09a214a3e07c919a… 4.61kB
<missing> 12 days ago /bin/sh -c #(nop) COPY file:0fd5fca330dcd6a7… 1.04kB
<missing> 12 days ago /bin/sh -c #(nop) COPY file:0b866ff3fc1ef5b0… 1.96kB
<missing> 12 days ago /bin/sh -c #(nop) COPY file:65504f71f5855ca0… 1.2kB
<missing> 12 days ago /bin/sh -c set -x && addgroup --system -… 61.1MB
<missing> 12 days ago /bin/sh -c #(nop) ENV PKG_RELEASE=1~bullseye 0B
<missing> 12 days ago /bin/sh -c #(nop) ENV NJS_VERSION=0.7.5 0B
<missing> 12 days ago /bin/sh -c #(nop) ENV NGINX_VERSION=1.23.0 0B
<missing> 12 days ago /bin/sh -c #(nop) LABEL maintainer=NGINX Do… 0B
<missing> 12 days ago /bin/sh -c #(nop) CMD ["bash"] 0B
<missing> 12 days ago /bin/sh -c #(nop) ADD file:8adbbab04d6f84cd8… 80.4MB
[root@ecs-214025 dockerfile]#
CMD和ENTRYPOINT的区别
测试CMD
[root@ecs-214025 dockerfile]# vim dockerfile-cmd-test
FROM centos:7
CMD ["ls","-a"]
[root@ecs-214025 dockerfile]# cat dockerfile-cmd-test
FROM centos:7
CMD ["ls","-a"]
[root@ecs-214025 dockerfile]#
[root@ecs-214025 dockerfile]# docker build -f dockerfile-cmd-test -t cmdtest .
Sending build context to Docker daemon 3.072kB
Step 1/2 : FROM centos:7
---> eeb6ee3f44bd
Step 2/2 : CMD ["ls","-a"]
---> Running in 7e534da18f19
Removing intermediate container 7e534da18f19
---> 6bcf5437dc08
Successfully built 6bcf5437dc08
Successfully tagged cmdtest:latest
[root@ecs-214025 dockerfile]#
[root@ecs-214025 dockerfile]# docker run 6bcf5437dc08
.
..
.dockerenv
anaconda-post.log
bin
dev
etc
home
lib
lib64
media
mnt
opt
proc
root
run
sbin
srv
sys
tmp
usr
var
[root@ecs-214025 dockerfile]#
[root@ecs-214025 dockerfile]# docker run 6bcf5437dc08 -l
docker: Error response from daemon: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: exec: "-l": executable file not found in $PATH: unknown.
[root@ecs-214025 dockerfile]# docker run 6bcf5437dc08 ls -al
total 64
drwxr-xr-x 1 root root 4096 Jul 5 15:53 .
drwxr-xr-x 1 root root 4096 Jul 5 15:53 ..
-rwxr-xr-x 1 root root 0 Jul 5 15:53 .dockerenv
-rw-r--r-- 1 root root 12114 Nov 13 2020 anaconda-post.log
lrwxrwxrwx 1 root root 7 Nov 13 2020 bin -> usr/bin
drwxr-xr-x 5 root root 340 Jul 5 15:53 dev
drwxr-xr-x 1 root root 4096 Jul 5 15:53 etc
drwxr-xr-x 2 root root 4096 Apr 11 2018 home
lrwxrwxrwx 1 root root 7 Nov 13 2020 lib -> usr/lib
lrwxrwxrwx 1 root root 9 Nov 13 2020 lib64 -> usr/lib64
drwxr-xr-x 2 root root 4096 Apr 11 2018 media
drwxr-xr-x 2 root root 4096 Apr 11 2018 mnt
drwxr-xr-x 2 root root 4096 Apr 11 2018 opt
dr-xr-xr-x 103 root root 0 Jul 5 15:53 proc
dr-xr-x--- 2 root root 4096 Nov 13 2020 root
drwxr-xr-x 11 root root 4096 Nov 13 2020 run
lrwxrwxrwx 1 root root 8 Nov 13 2020 sbin -> usr/sbin
drwxr-xr-x 2 root root 4096 Apr 11 2018 srv
dr-xr-xr-x 13 root root 0 Jun 5 08:56 sys
drwxrwxrwt 7 root root 4096 Nov 13 2020 tmp
drwxr-xr-x 13 root root 4096 Nov 13 2020 usr
drwxr-xr-x 18 root root 4096 Nov 13 2020 var
[root@ecs-214025 dockerfile]#
测试ENTRYPOINT
[root@ecs-214025 dockerfile]# vim dockerfile-entrypoint-test
[root@ecs-214025 dockerfile]# cat dockerfile-entrypoint-test
FROM centos:7
ENTRYPOINT ["ls","-a"]
[root@ecs-214025 dockerfile]# docker build -f dockerfile-entrypoint-test -t entrypointtest .
Sending build context to Docker daemon 4.096kB
Step 1/2 : FROM centos:7
---> eeb6ee3f44bd
Step 2/2 : ENTRYPOINT ["ls","-a"]
---> Running in 9333ed4489fd
Removing intermediate container 9333ed4489fd
---> a78d6fe6f56c
Successfully built a78d6fe6f56c
Successfully tagged entrypointtest:latest
[root@ecs-214025 dockerfile]# docker run a78d6fe6f56c
.
..
.dockerenv
anaconda-post.log
bin
dev
etc
home
lib
lib64
media
mnt
opt
proc
root
run
sbin
srv
sys
tmp
usr
var
[root@ecs-214025 dockerfile]# docker run a78d6fe6f56c -l
total 64
drwxr-xr-x 1 root root 4096 Jul 5 16:02 .
drwxr-xr-x 1 root root 4096 Jul 5 16:02 ..
-rwxr-xr-x 1 root root 0 Jul 5 16:02 .dockerenv
-rw-r--r-- 1 root root 12114 Nov 13 2020 anaconda-post.log
lrwxrwxrwx 1 root root 7 Nov 13 2020 bin -> usr/bin
drwxr-xr-x 5 root root 340 Jul 5 16:02 dev
drwxr-xr-x 1 root root 4096 Jul 5 16:02 etc
drwxr-xr-x 2 root root 4096 Apr 11 2018 home
lrwxrwxrwx 1 root root 7 Nov 13 2020 lib -> usr/lib
lrwxrwxrwx 1 root root 9 Nov 13 2020 lib64 -> usr/lib64
drwxr-xr-x 2 root root 4096 Apr 11 2018 media
drwxr-xr-x 2 root root 4096 Apr 11 2018 mnt
drwxr-xr-x 2 root root 4096 Apr 11 2018 opt
dr-xr-xr-x 104 root root 0 Jul 5 16:02 proc
dr-xr-x--- 2 root root 4096 Nov 13 2020 root
drwxr-xr-x 11 root root 4096 Nov 13 2020 run
lrwxrwxrwx 1 root root 8 Nov 13 2020 sbin -> usr/sbin
drwxr-xr-x 2 root root 4096 Apr 11 2018 srv
dr-xr-xr-x 13 root root 0 Jun 5 08:56 sys
drwxrwxrwt 7 root root 4096 Nov 13 2020 tmp
drwxr-xr-x 13 root root 4096 Nov 13 2020 usr
drwxr-xr-x 18 root root 4096 Nov 13 2020 var
[root@ecs-214025 dockerfile]#
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