Precondition

I. pull the basic image of ubuntu and mysql

1. Get mysql image

docker pull mysql:latest

2. Get ubuntu image

docker pull ubuntu

2. Check whether the image is pulled to

root@gancy:/# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
mysql               latest              7666f75adb6b        4 weeks ago         406 MB

3. Create and run the container

root@gancy:/# docker run --name mysql -v /data/mysql:/var/lib/mysql -p 3306:3306 -e MYSQL_ROOT_PASSWORD=123456 -d mysql:latest
root@gancy:/# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
b7e8a431a310        mysql:latest        "docker-entrypoint..."   18 minutes ago      Up 6 minutes        0.0.0.0:3306->3306/tcp   mysql

Download jdk and Tomcat

1. Switch to the stored directory (the same directory as the later Dockerfile)

cd /docker/java/javaweb

2. Download jdk

wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u111-b14/jdk-8u111-linux-x64.tar.gz

3. Download Tomcat

wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.5.11/bin/apache-tomcat-8.5.11.tar.gz

III. writing Dockerfile

1. Build the Dockerfile of javaweb image (my storage directory is / docker/java/javaweb /)

FROM ubuntu:latest
MAINTAINER gancy "18451117878@163.com"
#Refresh package cache and install wget tool
RUN apt-get update

#Install and configure the java environment

ADD jdk-8u101-linux-x64.tar.gz /usr/local/java

#Configure environment variables
ENV JAVA_HOME /usr/local/java/jdk1.8.0_101
ENV PATH $JAVA_HOME/bin;$PATH
ENV CLASSPATH .:$JAVA_HOME/lib

#Configure the operating environment
ENV LANG C.UTF-8

#Configure Tomcat
ADD apache-tomcat-8.5.11.tar.gz /usr/local/tomcat/
RUN chmod +x /usr/local/tomcat/apache-tomcat-8.5.11/bin/*.sh
EXPOSE 8080
ENTRYPOINT /usr/local/tomcat/apache-tomcat-8.5.11/bin/startup.sh && /bin/bash

2. Build the Dockerfile of mysql image in utf-8 encoding format (my storage directory is / docker/mysql /)

FROM mysql:latest
MAINTAINER gancy "18451117878@163.com"
#Modify coding method
RUN echo "character-set-server=utf8" >> /etc/mysql/mysql.conf.d/mysqld.cnf

RUN service mysql restart

EXPOSE 3306

IV. build image according to Dockerfile

Note: switch to the directory of Dockerfile before building the image
1. Build mysql

docker build -t="gancy/mysql" .

2. Building the basic image of Java Web

docker build -t="gancy/javaweb" .

3. View the built image

root@VM-71-179-ubuntu:/docker/java/javaweb# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
gancy/javaweb       latest              69fdf275136e        55 seconds ago      548 MB
gancy/mysql         latest              f898d7b9976d        4 minutes ago       406 MB
mysql               latest              22be5748ecbe        2 days ago          406 MB
ubuntu              latest              0ef2e08ed3fa        3 days ago          130 MB

V. running mysql and Java Web Image

root@VM-71-179-ubuntu:/docker/java/javaweb# docker run --name mysql -v /data/mysql:/var/lib/mysql -p 3306:3306 -e MYSQL_ROOT_PASSWORD=123456 -d gancy/mysql
ff26f0d854ea1e1e36b592070c85d911b6501de4e1292b637749bcb28ced6520
root@VM-71-179-ubuntu:/docker/java/javaweb# docker run -i -t -d -p 8088:8080 --name="javawebtest" gancy/javaweb
3315b161443c2b47b8205a5469ad4a3bf515d9494b93c91ae47f4fee94f2aa21
root@VM-71-179-ubuntu:/docker/java/javaweb# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
3315b161443c        gancy/javaweb       "/bin/sh -c '/usr/..."   21 seconds ago      Up 20 seconds       0.0.0.0:8088->8080/tcp   javawebtest
ff26f0d854ea        gancy/mysql         "docker-entrypoint..."   2 minutes ago       Up 2 minutes        0.0.0.0:3306->3306/tcp   mysql

run      Run the container.
–name  Name the container. If it is not named, it will be a long string Hash Value, not beautiful.
-v     Data volume storage. If the storage container is not closed, all data will be destroyed. Map a local folder to the container's folder.
-p     Port mapping: map the local 3306 port to the 3306 port in the container. It feels like the database is local. 2333
-e     Set the variable value, where the database is set root Many variables can be set by yourself, and specific access https://hub.docker.com
-d     Background operation

Six, test

Java Web test

Web test results

MySql test

MySQL test results