10.Dockerfile详解【4】

Posted on 2019-05-24 Edited on 2023-02-14 In Docker

基于一个centos创建一个tomcat镜像

1. 准备工作:

创建目录
下载jdk和tomcat: jdk和tomcat下载到Dockerfile所在的目录

[root@localhost tomcat]# pwd
/usr/local/docker/docker_file/tomcat
[root@localhost tomcat]# ls
apache-tomcat-8.5.60.tar.gz  Dockerfile  jdk-8u271-linux-x64.tar.gz

2. 创建并编写Dockerfile文件

# 基于centos镜像
FROM centos
# 设置作者和邮箱
MAINTAINER Tom<Tom@qq.com>
# 声明变量
ENV SOFTWARE_PATH /usr/local/software
ENV JDK_NAME jdk1.8.0_271
ENV TOMCAT_NAME tomcat-8.5
# 创建目录
RUN mkdir ${SOFTWARE_PATH}
# 把jdk和tomcat复制到相应目录，(jdk和tomcat只能和Dockerfile在同一目录)
ADD jdk-8u271-linux-x64.tar.gz /${SOFTWARE_PATH}/
ADD apache-tomcat-8.5.60.tar.gz /${SOFTWARE_PATH}/
# 把apache-tomcat-8.5.60文件夹重命名为tomcat-8.5
RUN mv ${SOFTWARE_PATH}/apache-tomcat-8.5.60 ${SOFTWARE_PATH}/${TOMCAT_NAME}
# 设置工作目录
WORKDIR ${SOFTWARE_PATH}/${TOMCAT_NAME}
# 配置jdk和tomcat环境变量
ENV JAVA_HOME ${SOFTWARE_PATH}/${JDK_NAME}
ENV CLASSPATH ${JAVA_HOME}/lib/dt.jar:${JDK_HOME}/lib/tools.jar
ENV CATALINA_HOME ${SOFTWARE_PATH}/${TOMCAT_NAME}
ENV CATALINA_BASE ${SOFTWARE_PATH}/${TOMCAT_NAME}
ENV PATH ${PATH}:${JAVA_HOME}/bin:${CATALINA_HOME}/lib:${CATALINA_HOME}/bin
# 安装Vim
RUN yum -y install vim
# 设置对外的端口，提示作用
EXPOSE 8080
# 打开一个终端
CMD bin/startup.sh && tail -f logs/catalina.out

3. 构造镜像

[root@localhost tomcat]# docker build -t mytomcat02:1.0 .
Sending build context to Docker daemon 153.6 MB
Step 1/18 : FROM centos
 ---> 0d120b6ccaa8
Step 2/18 : MAINTAINER Tom<Tom@qq.com>
 ---> Using cache
 ---> e91b1474c962
Step 3/18 : ENV SOFTWARE_PATH /usr/local/software
 ---> Running in a83cb85001ea
 ---> 7c51deda1e35
Removing intermediate container a83cb85001ea
Step 4/18 : ENV JDK_NAME jdk1.8.0_271
 ---> Running in 3e444324244e
 ---> c931c9163dee
Removing intermediate container 3e444324244e
Step 5/18 : ENV TOMCAT_NAME tomcat-8.5
 ---> Running in a1f79c6f0f10
 ---> 5c0e9091b073
Removing intermediate container a1f79c6f0f10
Step 6/18 : RUN mkdir ${SOFTWARE_PATH}
 ---> Running in f73a01c7102b

 ---> 4a798458cf23
Removing intermediate container f73a01c7102b
Step 7/18 : ADD jdk-8u271-linux-x64.tar.gz /${SOFTWARE_PATH}/
 ---> 454d6815d6dd
Removing intermediate container 2ec4f2574a96
Step 8/18 : ADD apache-tomcat-8.5.60.tar.gz /${SOFTWARE_PATH}/
 ---> a261ee4d9ff9
Removing intermediate container 870a36b21bcb
Step 9/18 : RUN mv ${SOFTWARE_PATH}/apache-tomcat-8.5.60 ${SOFTWARE_PATH}/${TOMCAT_NAME}
 ---> Running in aa65000baf26

 ---> 181d3d8aa457
Removing intermediate container aa65000baf26
Step 10/18 : WORKDIR ${SOFTWARE_PATH}/${TOMCAT_NAME}
 ---> 5706c8374e51
Removing intermediate container fc0e0fad6771
Step 11/18 : ENV JAVA_HOME ${SOFTWARE_PATH}/${JDK_NAME}
 ---> Running in e531aa3daadb
 ---> 76e7217d0c9d
Removing intermediate container e531aa3daadb
Step 12/18 : ENV CLASSPATH ${JAVA_HOME}/lib/dt.jar:${JDK_HOME}/lib/tools.jar
 ---> Running in fbd5d397794b
 ---> 4e161e5b7663
Removing intermediate container fbd5d397794b
Step 13/18 : ENV CATALINA_HOME ${SOFTWARE_PATH}/${TOMCAT_NAME}
 ---> Running in 0663853fed51
 ---> 05fb696f3d96
Removing intermediate container 0663853fed51
Step 14/18 : ENV CATALINA_BASE ${SOFTWARE_PATH}/${TOMCAT_NAME}
 ---> Running in 100d9b73591a
 ---> 6db8719a58d5
Removing intermediate container 100d9b73591a
Step 15/18 : ENV PATH ${PATH}:${JAVA_HOME}/bin:${CATALINA_HOME}/lib:${CATALINA_HOME}/bin
 ---> Running in d47d95bf5ece
 ---> 3d5daf705584
Removing intermediate container d47d95bf5ece
Step 16/18 : RUN yum -y install vim
 ---> Running in eada565e8b2c

CentOS-8 - AppStream                             24 kB/s | 5.8 MB     04:08
CentOS-8 - Base                                 318 kB/s | 2.2 MB     00:07
CentOS-8 - Extras                               505  B/s | 8.6 kB     00:17
Dependencies resolved.
================================================================================
 Package             Arch        Version                   Repository      Size
================================================================================
Installing:
 vim-enhanced        x86_64      2:8.0.1763-13.el8         AppStream      1.4 M
Installing dependencies:
 gpm-libs            x86_64      1.20.7-15.el8             AppStream       39 k
 vim-common          x86_64      2:8.0.1763-13.el8         AppStream      6.3 M
 vim-filesystem      noarch      2:8.0.1763-13.el8         AppStream       48 k
 which               x86_64      2.21-12.el8               BaseOS          49 k

Transaction Summary
================================================================================
Install  5 Packages

Total download size: 7.8 M
Installed size: 31 M
Downloading Packages:
(1/5): gpm-libs-1.20.7-15.el8.x86_64.rpm         28 kB/s |  39 kB     00:01
(2/5): vim-filesystem-8.0.1763-13.el8.noarch.rp  25 kB/s |  48 kB     00:01
(3/5): which-2.21-12.el8.x86_64.rpm              23 kB/s |  49 kB     00:02
[MIRROR] vim-common-8.0.1763-13.el8.x86_64.rpm: Curl error (28): Timeout was reached for http://mirror.centos.org/centos/8/AppStream/x86_64/os/Packages/vim-common-8.0.1763-13.el8.x86_64.rpm [Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds]
(4/5): vim-enhanced-8.0.1763-13.el8.x86_64.rpm   16 kB/s | 1.4 MB     01:26
(5/5): vim-common-8.0.1763-13.el8.x86_64.rpm     11 kB/s | 6.3 MB     10:02
--------------------------------------------------------------------------------
Total                                            13 kB/s | 7.8 MB     10:03
warning: /var/cache/dnf/AppStream-02e86d1c976ab532/packages/gpm-libs-1.20.7-15.el8.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 8483c65d: NOKEY
CentOS-8 - AppStream                            106 kB/s | 1.6 kB     00:00
Importing GPG key 0x8483C65D:
 Userid     : "CentOS (CentOS Official Signing Key) <security@centos.org>"
 Fingerprint: 99DB 70FA E1D7 CE22 7FB6 4882 05B5 55B3 8483 C65D
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
Key imported successfully
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                        1/1
  Installing       : which-2.21-12.el8.x86_64                               1/5
  Installing       : vim-filesystem-2:8.0.1763-13.el8.noarch                2/5
  Installing       : vim-common-2:8.0.1763-13.el8.x86_64                    3/5
  Installing       : gpm-libs-1.20.7-15.el8.x86_64                          4/5
  Running scriptlet: gpm-libs-1.20.7-15.el8.x86_64                          4/5
  Installing       : vim-enhanced-2:8.0.1763-13.el8.x86_64                  5/5
  Running scriptlet: vim-enhanced-2:8.0.1763-13.el8.x86_64                  5/5
  Running scriptlet: vim-common-2:8.0.1763-13.el8.x86_64                    5/5
  Verifying        : gpm-libs-1.20.7-15.el8.x86_64                          1/5
  Verifying        : vim-common-2:8.0.1763-13.el8.x86_64                    2/5
  Verifying        : vim-enhanced-2:8.0.1763-13.el8.x86_64                  3/5
  Verifying        : vim-filesystem-2:8.0.1763-13.el8.noarch                4/5
  Verifying        : which-2.21-12.el8.x86_64                               5/5

Installed:
  gpm-libs-1.20.7-15.el8.x86_64         vim-common-2:8.0.1763-13.el8.x86_64
  vim-enhanced-2:8.0.1763-13.el8.x86_64 vim-filesystem-2:8.0.1763-13.el8.noarch
  which-2.21-12.el8.x86_64

Complete!
 ---> 2ae53256fc5d
Removing intermediate container eada565e8b2c
Step 17/18 : EXPOSE 8080
 ---> Running in cd441c5d4da4
 ---> 4b508c17806e
Removing intermediate container cd441c5d4da4
Step 18/18 : CMD bin/startup.sh && tail -f logs/catalina.out
 ---> Running in 3ae8384422d7
 ---> 9715fb4d02ba
Removing intermediate container 3ae8384422d7
Successfully built 9715fb4d02ba

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[root@localhost tomcat]# docker images
REPOSITORY              TAG                 IMAGE ID            CREATED             SIZE
mytomcat02              1.0                 9715fb4d02ba        3 hours ago         657 MB

4. 运行镜像

1 2	[root@localhost tomcat]# docker run -d -p 8080:8080 mytomcat02:1.0 78a9391a3e10222a3cfcd8298974a840f60ef01f5bbfc26d07706544c7f96c0e

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2
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[root@localhost tomcat]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
78a9391a3e10        mytomcat02:1.0      "/bin/sh -c 'bin/s..."   9 seconds ago       Up 8 seconds        0.0.0.0:8080->8080/tcp   objective_goodall

5. 测试验证

[root@localhost tomcat]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:1f:b2:aa brd ff:ff:ff:ff:ff:ff
    inet 192.168.168.130/24 brd 192.168.168.255 scope global noprefixroute dynamic ens33
       valid_lft 1624sec preferred_lft 1624sec
    inet6 fe80::8c0b:4db3:b3f3:c20b/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether 02:42:d4:c8:84:ba brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 scope global docker0
       valid_lft forever preferred_lft forever
    inet6 fe80::42:d4ff:fec8:84ba/64 scope link
       valid_lft forever preferred_lft forever
35: veth25de6ca@if34: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
    link/ether 6e:ec:1f:4a:63:9d brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::6cec:1fff:fe4a:639d/64 scope link
       valid_lft forever preferred_lft forever

打开浏览器，访问http://192.168.168.130:8080

[root@localhost tomcat]# docker exec -it 78a9391a3e10 /bin/bash
[root@78a9391a3e10 tomcat-8.5]# vim -version
VIM - Vi IMproved 8.0 (2016 Sep 12, compiled Nov 11 2019 19:08:24)
Garbage after option argument: "-version"
More info with: "vim -h"