Step-by-Step Guide to Install JDK, Maven, Create a Spring Boot Application, and Deploy It with Docker

Install JDK

yum -y install java
[root@dockerserver ~]# java -version
openjdk version "1.8.0_222"
OpenJDK Runtime Environment (build 1.8.0_222-b10)
OpenJDK 64-Bit Server VM (build 25.222-b10, mixed mode)

Install Maven

wget http://mirror.bit.edu.cn/apache/maven/maven-3/3.6.1/binaries/apache-maven-3.6.1-bin.tar.gz

tar zxf apache-maven-3.6.1-bin.tar.gz  -C /usr/local/
echo "export M2_HOME=/usr/local/apache-maven-3.6.1" >> /etc/profile
echo "export PATH=\$PATH:\$M2_HOME/bin" >> /etc/profile
source /etc/profile

mvn -version
Apache Maven 3.6.1 (d66c9c0b3152b2e69ee9bac180bb8fcc8e6af555; 2019-04-04T15:00:29-04:00)
Maven home: /usr/local/apache-maven-3.6.1
Java version: 1.8.0_222, vendor: Oracle Corporation, runtime: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.el7_6.x86_64/jre
Default locale: zh_CN, platform encoding: UTF-8
OS name: "linux", version: "3.10.0-514.el7.x86_64", arch: "amd64", family: "unix"

Create a Spring Boot Project

Project repository: https://github.com/gazgeek/springboot-helloworld.git

yum -y install git wget
git clone https://github.com/gazgeek/springboot-helloworld.git
cd springboot-helloworld
mvn clean install -DskipTests
ls target/

systemctl stop firewalld
java -jar helloworld-0.0.1-SNAPSHOT.jar   # start service
nohup java -jar helloworld-0.0.1-SNAPSHOT.jar &

Install Docker

yum -y install docker
vim /etc/sysconfig/docker
OPTIONS='--selinux-enabled=false --log-driver=journald --signature-verification=false'

systemctl start docker
systemctl status docker
systemctl enable docker

yum -y update
reboot

Create Dockerfile

FROM openjdk:8
MAINTAINER zy

COPY ./helloworld-0.0.1-SNAPSHOT.jar helloworld-0.0.1-SNAPSHOT.jar
EXPOSE 8080
CMD ["java","-jar","helloworld-0.0.1-SNAPSHOT.jar"]

Build Docker Image

docker build -t mytest/docker/springbootdemo:latest .

[root@dockerserver ~]# docker build -t mytest/docker/springbootdemo:latest .
Sending build context to Docker daemon 35.98 MB
Step 1/5 : FROM openjdk:8
... (output truncated for brevity) ...
Successfully built 8189ee4c7f86

# View images
[root@dockerserver ~]# docker images
REPOSITORY                     TAG                 IMAGE ID            CREATED             SIZE
mytest/docker/springbootdemo   latest              8189ee4c7f86        34 seconds ago      501 MB
docker.io/openjdk              8                   08ded5f856cc        2 weeks ago         488 MB

# Delete image
docker rmi 8189ee4c7f86
Untagged: mytest/docker/springbootdemo:latest
Deleted: sha256:8189ee4c7f86766100db7a1df412c797d460eb18861913f352befdbbc25df859
... (other layers deleted) ...

Run Docker Container

docker run -itd -p 8080:8080  mytest/docker/springbootdemo:latest

docker run -itd mytest/docker/springbootdemo:latest

8c2b9a3b545c021a3f8d06d96e36d55f607e75afdfcffa251e68ed3975c70553
docker ps

CONTAINER ID        IMAGE                                 COMMAND                  CREATED             STATUS              PORTS               NAMES
8c2b9a3b545c        mytest/docker/springbootdemo:latest   "java -jar hellowo..."   7 seconds ago       Up 6 seconds        8080/tcp            wizardly_brattain

# Exec into container and test
docker exec -it 8c2b9a3b545c /bin/bash
root@8c2b9a3b545c:/# curl 127.0.0.1:8080
Hello from GazGeek!

Stop and Delete Containers

docker stop
docker rm

[root@dockerserver ~]# docker rm $(docker ps -a -q)
e976498656af
2330b6a8875e
7ace91b113ae
f1adee2c6f37
... (other containers) ...
Error response from daemon: You cannot remove a running container 8c2b9a3b545c021a3f8d06d96e36d55f607e75afdfcffa251e68ed3975c70553. Stop the container before attempting removal or use -f

[root@dockerserver ~]# docker ps
... (running container list) ...

[root@dockerserver ~]# docker rm $(docker ps -a -q) -f
8c2b9a3b545c