创建Dockerfile，构建jdk+tomcat环境

Dockerfile文件

[root@controller jdk]# cat Dockerfile 
#pull base image
FROM ubuntu

MAINTAINER  andy.liu "andyliu208@qq.com"

#update source
RUN echo "deb http://archive.ubuntu.com/ubuntu precise main universe"> /etc/apt/sources.list
RUN apt-get update

#install curl
RUN apt-get install curl -y

#install JDK7
RUN cd /tmp && curl -L 'http://download.oracle.com/otn-pub/java/jdk/7u65-b17/jdk-7u65-linux-x64.tar.gz' -H 'Cookie: oraclelicense=accept-securebackup-cookie; gpw_e24=Dockerfile' | tar -xz  
RUN mkdir -p /usr/lib/jvm  
RUN mv /tmp/jdk1.7.0_65/ /usr/lib/jvm/java-7-oracle/

#set oracle JDK 7 as default Java
 RUN update-alternatives --install /usr/bin/java java /usr/lib/jvm/java-7-oracle/bin/java 300     
RUN update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/java-7-oracle/bin/javac 300     
  
ENV JAVA_HOME /usr/lib/jvm/java-7-oracle/  

 # Install tomcat7  
RUN cd /tmp && curl -L 'http://archive.apache.org/dist/tomcat/tomcat-7/v7.0.8/bin/apache-tomcat-7.0.8.tar.gz' | tar -xz  
RUN mv /tmp/apache-tomcat-7.0.8/ /opt/tomcat7/  
  
ENV CATALINA_HOME /opt/tomcat7  
ENV PATH $PATH:$CATALINA_HOME/bin  
  
ADD tomcat7.sh /etc/init.d/tomcat7  
RUN chmod 755 /etc/init.d/tomcat7  
  
# Expose ports.  
EXPOSE 8080  
  
# Define default command.  
ENTRYPOINT service tomcat7 start && tail -f /opt/tomcat7/logs/catalina.out 

tomcat7.sh

[root@controller jdk]# cat tomcat7.sh 

    export JAVA_HOME=/usr/lib/jvm/java-7-oracle/  
    export TOMCAT_HOME=/opt/tomcat7  
      
    case $1 in  
    start)  
      sh $TOMCAT_HOME/bin/startup.sh  
    ;;  
    stop)  
      sh $TOMCAT_HOME/bin/shutdown.sh  
    ;;  
    restart)  
      sh $TOMCAT_HOME/bin/shutdown.sh  
      sh $TOMCAT_HOME/bin/startup.sh  
    ;;  
    esac  
    exit 0 

构建镜像

[root@controller jdk]# docker build -t candela/ubuntu/jdk-tomcat:V1 .
Sending build context to Docker daemon 4.096 kB
Step 1 : FROM ubuntu
 ---> 6a2f32de169d
Step 2 : MAINTAINER andy.liu "andyliu208@qq.com"
 ---> Using cache
 ---> 0f6041c706fd
Step 3 : RUN echo "deb http://archive.ubuntu.com/ubuntu precise main universe"> /etc/apt/sources.list
 ---> Using cache
 ---> d877b5463bf8
Step 4 : RUN apt-get update
 ---> Using cache
 ---> 8c0ed7a91df9
Step 5 : RUN apt-get install curl -y
 ---> Using cache
 ---> e071c2ba5a18
Step 6 : RUN cd /tmp && curl -L 'http://download.oracle.com/otn-pub/java/jdk/7u65-b17/jdk-7u65-linux-x64.tar.gz' -H 'Cookie: oraclelicense=accept-securebackup-cookie; gpw_e24=Dockerfile' | tar -xz
 ---> Using cache
 ---> 1469c40ab52b
Step 7 : RUN mkdir -p /usr/lib/jvm
 ---> Using cache
 ---> c7233f76460c
Step 8 : RUN mv /tmp/jdk1.7.0_65/ /usr/lib/jvm/java-7-oracle/
 ---> Using cache
 ---> 919c171d76da
Step 9 : RUN update-alternatives --install /usr/bin/java java /usr/lib/jvm/java-7-oracle/bin/java 300
 ---> Using cache
 ---> 2d33e67e6aff
Step 10 : RUN update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/java-7-oracle/bin/javac 300
 ---> Using cache
 ---> 311bb36e1832
Step 11 : ENV JAVA_HOME /usr/lib/jvm/java-7-oracle/
 ---> Using cache
 ---> 3527d811ab1b
Step 12 : RUN cd /tmp && curl -L 'http://archive.apache.org/dist/tomcat/tomcat-7/v7.0.8/bin/apache-tomcat-7.0.8.tar.gz' | tar -xz
 ---> Using cache
 ---> 0af25e62d20d
Step 13 : RUN mv /tmp/apache-tomcat-7.0.8/ /opt/tomcat7/
 ---> Using cache
 ---> c26c0e7b9b58
Step 14 : ENV CATALINA_HOME /opt/tomcat7
 ---> Using cache
 ---> c38b8c600225
Step 15 : ENV PATH $PATH:$CATALINA_HOME/bin
 ---> Using cache
 ---> 89fb15999e0a
Step 16 : ADD tomcat7.sh /etc/init.d/tomcat7
 ---> f52f362eac4b
Removing intermediate container 193e75c67b03
Step 17 : RUN chmod 755 /etc/init.d/tomcat7
 ---> Running in b36ea8a9680d
 ---> cbe2f0a115c1
Removing intermediate container b36ea8a9680d
Step 18 : EXPOSE 8080
 ---> Running in fe75b152d188
 ---> 48ed4c005dc0
Removing intermediate container fe75b152d188
Step 19 : ENTRYPOINT service tomcat7 start && tail -f /opt/tomcat7/logs/catalina.out
 ---> Running in be9b80dff87c
 ---> 74784c73edf0
Removing intermediate container be9b80dff87c
Successfully built 74784c73edf0

[root@controller jdk]# docker run -d -p 8090:8080 candela/
candela/dockerfile            candela/dockerfile:v1         candela/ubuntu/jdk-tomcat     candela/ubuntu/jdk-tomcat:V1  
[root@controller jdk]# docker run -d  --name web1 -h web1 -p 8090:8080 candela/ubuntu/jdk-tomcat:V1 
5d6a8e2d0be53f78ca5ba2873ae3e9437c23d65715c649396093fd32e0aed17c
[root@controller jdk]# docker ps
CONTAINER ID        IMAGE                          COMMAND                  CREATED             STATUS              PORTS                    NAMES
5d6a8e2d0be5        candela/ubuntu/jdk-tomcat:V1   "/bin/sh -c 'service "   7 seconds ago       Up 5 seconds        0.0.0.0:8090->8080/tcp   web1
66f4b715f48d        candela/dockerfile:v1          "/bin/bash"              47 minutes ago      Up 47 minutes                                dockfile
159e17c5b266        postgres                       "docker-entrypoint.sh"   About an hour ago   Up About an hour    5432/tcp                 db1

默认情况下，tomcat会占用8080端口，刚才在启动container的时候，指定了 -p 8090:8080，映射到宿主机端口就是8090。

http://<host>:8090 host为主机IP

http://192.168.111.29:8090/

本文转自    OpenStack2015 博客，原文链接：  http://blog.51cto.com/andyliu/1919282      如需转载请自行联系原作者