docker构建tomcat镜像

下载centos镜像

# docker pull daocloud.io/centos:7

[root@localhost ~]# docker pull daocloud.io/centos:
: Pulling from centos
a02a4930cb5d: Pull complete
Digest: sha256:365fc7f33107869dfcf2b3ba220ce0aa42e16d3f8e8b3c21d72af1ee622f0cf0
Status: Downloaded newer image for daocloud.io/centos:
[root@localhost ~]#
[root@localhost ~]# docker images
REPOSITORY           TAG                 IMAGE ID            CREATED             SIZE
daocloud.io/centos                      1e1148e4cc2c         weeks ago         202MB

创建一个镜像

# docker tag daocloud.io/centos:7 centos

[root@localhost ~]# docker tag daocloud.io/centos: centos
[root@localhost ~]#
[root@localhost ~]# docker images
REPOSITORY           TAG                 IMAGE ID            CREATED             SIZE
daocloud.io/centos                      1e1148e4cc2c         weeks ago         202MB
centos               latest              1e1148e4cc2c         weeks ago         202MB

删除源镜像

# docker rmi daocloud.io/centos:7

[root@localhost ~]# docker rmi daocloud.io/centos:
Untagged: daocloud.io/centos:
Untagged: daocloud.io/centos@sha256:365fc7f33107869dfcf2b3ba220ce0aa42e16d3f8e8b3c21d72af1ee622f0cf0
[root@localhost ~]#
[root@localhost ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
centos              latest              1e1148e4cc2c         weeks ago         202MB
[root@localhost ~]# 

创建一个/root/software/目录，并把安装包放在该目录下

[root@localhost ~]# mkdir software
[root@localhost ~]# ls
anaconda-ks.cfg              jdk-7u67-linux-x64.tar.gz  software
apache-tomcat-7.0..tar.gz  kjxy.war
[root@localhost ~]#
[root@localhost ~]# cp jdk-7u67-linux-x64.tar.gz apache-tomcat-7.0..tar.gz software/
[root@localhost ~]#
[root@localhost ~]# cd software/
[root@localhost software]#
[root@localhost software]# ls
apache-tomcat-7.0..tar.gz  jdk-7u67-linux-x64.tar.gz

启动容器

# docker run -it -v /root/software/:/mnt/software/ centos /bin/bash

[root@localhost ~]# docker run -it -v /root/software/:/mnt/software/ centos /bin/bash
[root@d8222810d886 /]#
[root@d8222810d886 /]# cd /mnt/software/
[root@d8222810d886 software]#
[root@d8222810d886 software]# ls
apache-tomcat-7.0.55.tar.gz jdk-7u67-linux-x64.tar.gz

为了搭建 Java Web 运行环境，需要安装 JDK 与 Tomcat，下面的过程均在容器内部进行。

安装JDK

创建jdk存储目录

# mkdir /usr/jdk64/

解压jdk到存储目录

# tar -zxf /mnt/software/jdk-7u67-linux-x64.tar.gz -C /usr/jdk64/

操作过程如下：

[root@d8222810d886 ~]# mkdir /usr/jdk64/
[root@d8222810d886 ~]#
[root@d8222810d886 ~]# tar -zxf /mnt/software/jdk-7u67-linux-x64.tar.gz -C /usr/jdk64/
[root@d8222810d886 ~]#
[root@d8222810d886 ~]# ls /usr/jdk64/
jdk1..0_67

安装tomcat

解压tomcat到存储目录

# tar -zxf /mnt/software/apache-tomcat-7.0.55.tar.gz -C /home/

[root@d8222810d886 ~]# tar -zxf /mnt/software/apache-tomcat-7.0..tar.gz -C /home/
[root@d8222810d886 ~]#
[root@d8222810d886 ~]# ls /home/
apache-tomcat-7.0.55
[root@d8222810d886~]# mv /home/apache-tomcat-7.0.55/ /home/tomcat7
[root@d8222810d886~]# ls /home/
tomcat7

编写运行脚本

编写一个运行脚本，当启动容器时，运行该脚本，启动 Tomcat。

# vi /root/run.sh

[root@d8222810d886 ~]# vi run.sh
[root@d8222810d886 ~]#
[root@d8222810d886 ~]# cat run.sh 
#!/bin/bash
export JAVA_HOME=/usr/jdk64/jdk1..0_67
export PATH=$JAVA_HOME/bin:$PATH
sh /home/tomcat/bin/catalina.sh run 

为运行脚本添加执行权限

# chmod 777 run.sh

[root@d8222810d886 ~]# chmod  run.sh
[root@d8222810d886 ~]#
[root@d8222810d886 ~]# ll
total
-rw-------.  root root  Dec   : anaconda-ks.cfg
-rwxrwxrwx.  root root   Jan  : run.sh

给tomcat运行脚本添加权限

[root@d8222810d886 ~]# chmod +x /home/tomcat/bin/*.sh
[root@d8222810d886 ~]#
[root@d8222810d886 ~]# ll /home/apache-tomcat-7.0.55/bin/*.sh
-rwxr-xr-x. 1 root root 20779 Jul 18  2014 /home/apache-tomcat-7.0.55/bin/catalina.sh
-rwxr-xr-x. 1 root root  1922 Jul 18  2014 /home/apache-tomcat-7.0.55/bin/configtest.sh
-rwxr-xr-x. 1 root root  7888 Jul 18  2014 /home/apache-tomcat-7.0.55/bin/daemon.sh
-rwxr-xr-x. 1 root root  1965 Jul 18  2014 /home/apache-tomcat-7.0.55/bin/digest.sh
-rwxr-xr-x. 1 root root  3459 Jul 18  2014 /home/apache-tomcat-7.0.55/bin/setclasspath.sh
-rwxr-xr-x. 1 root root  1902 Jul 18  2014 /home/apache-tomcat-7.0.55/bin/shutdown.sh
-rwxr-xr-x. 1 root root  1904 Jul 18  2014 /home/apache-tomcat-7.0.55/bin/startup.sh
-rwxr-xr-x. 1 root root  5024 Jul 18  2014 /home/apache-tomcat-7.0.55/bin/tool-wrapper.sh
-rwxr-xr-x. 1 root root  1908 Jul 18  2014 /home/apache-tomcat-7.0.55/bin/version.sh

退出容器

[root@d8222810d886 ~]# exit
exit
[root@localhost ~]#
[root@localhost ~]# docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                     PORTS               NAMES
d8222810d886        centos              "/bin/bash"          minutes ago      Exited ()  seconds ago                       zealous_galileo

创建tomcat镜像

根据某个“容器 ID”来创建一个新的“镜像”

# docker commit d8222810d886 djltomcat:latest

[root@localhost ~]# docker commit d8222810d886 djltomcat:latest
sha256:559211e0b347204543772eddb94c5b73810a8d2746fb30d9a24c99e33b89b3e9
[root@localhost ~]#
[root@localhost ~]# docker images
REPOSITORY           TAG                 IMAGE ID            CREATED             SIZE
djltomcat            latest              559211e0b347         seconds ago      508MB
centos               latest              1e1148e4cc2c         weeks ago         202MB

启动tomcat容器

首先，新建/root/webapps/目录，把war包拷贝到该目录

# mkdir webapps

[root@localhost ~]# ls
anaconda-ks.cfg  apache-tomcat-7.0..tar.gz  jdk-7u67-linux-x64.tar.gz  kjxy.war  software
[root@localhost ~]#
[root@localhost ~]# mkdir webapps
[root@localhost ~]#
[root@localhost ~]# cp kjxy.war webapps/
[root@localhost ~]#
[root@localhost ~]# ls webapps/
kjxy.war

编写一个运行脚本，当启动容器时，运行该脚本，启动 Tomcat

# docker run -d -p 58080:8080 -v /root/webapps/:/home/tomcat7/webapps/ --name test djltomcat:latest /root/run.sh

[root@localhost ~]# docker run -d -p : -v /root/webapps/:/home/tomcat7/webapps/ --name test djltomcat:latest /root/run.sh
87f68c345d3bd42bd4a87de96430e7dfa7f047688b66f0ea52d1e1778a4a842b
[root@localhost ~]#
[root@localhost ~]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                     NAMES
87f68c345d3b        djltomcat:latest    "/root/run.sh"       seconds ago      Up  seconds       0.0.0.0:->/tcp   test
[root@localhost ~]#
[root@localhost ~]# cd webapps
[root@localhost webapps]#
[root@localhost webapps]# ls
kjxy  kjxy.war

在浏览器中，输入宿主IP和端口号，即可访问 Tomcat：

参考博客：

使用Docker搭建Tomcat运行环境

https://www.cnblogs.com/areyouready/p/8949991.html

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