利用Docker创建镜像运行jar包

1、上传jar包
2、在jar包同级目录创建dockerfile文件

[root@bogon www]# tree
.
├── bh-user-service.jar
└── Dockerfile

0 directories, 2 files

[root@bogon www]# cat Dockerfile 
FROM java:8
MAINTAINER RoES roes@163.com
copy bh-user-service.jar /bh-user-service.jar
CMD java -jar /bh-user-service.jar
EXPOSE 8081

# 基础镜像是docker仓库的java:8（JDK8）
 FROM java:8 
#  作者签名
 MAINTAINER RoES roes@163.com
#  挂载宿主机jar包到镜像
 copy bh-user-service.jar /bh-user-service.jar
#  执行 java -jar 命令，启动容器跟随启动
 CMD java -jar /lost_and_found-v1.jar
#  设置对外端口为 8081
 EXPOSE 8081

3、通过Dockerfile创建镜像

 docker build -t bh-user-service .

. 表示使用当前上下文中的 Dockerfile 文件,创建镜像名为bh-user-service的镜像

[root@bogon www]# docker build -t bh-user-service .
Sending build context to Docker daemon  73.2 MB
Step 1/5 : FROM java:8
 ---> d23bdf5b1b1b
Step 2/5 : MAINTAINER RoES roes@163.com
 ---> Using cache
 ---> 3bfcb4462158
Step 3/5 : COPY bh-user-service.jar /bh-user-service.jar
 ---> Using cache
 ---> 9075987531ff
Step 4/5 : CMD java -jar /bh-user-service.jar
 ---> Using cache
 ---> 283dc89f4f8b
Step 5/5 : EXPOSE 8082
 ---> Using cache
 ---> 87d09e0ade91
Successfully built 87d09e0ade91

最后输出Successfully built 87d09e0ade91则创建成功，镜像ID：87d09e0ade91

[root@bogon www]# docker images
REPOSITORY                                      TAG                 IMAGE ID            CREATED             SIZE
bh-user-service                                 latest              87d09e0ade91        15 minutes ago      716 MB
bh-user-services                                latest              87d09e0ade91        15 minutes ago      716 MB

4、运行jar包
只要运行容器则jar会自动运行

[root@bogon www]# docker run -d -p 8081:8081 --name bh-user-services bh-user-services
c45f162b7658e5610942359e4613a51aaf8b3ebeb269b0478e2c3cb834139b74
[root@bogon www]# docker ps -a
CONTAINER ID        IMAGE                                     COMMAND                  CREATED             STATUS                   PORTS                              NAMES
c45f162b7658        bh-user-services                          "/bin/sh -c 'java ..."   4 seconds ago       Up 3 seconds             0.0.0.0:8081->8081/tcp, 8082/tcp   bh-user-services
b7f3768034e8        bh-user-service                           "/bin/sh -c 'java ..."   15 minutes ago      Up 15 minutes            0.0.0.0:8082->8082/tcp             bh-user-service

5、查看java进程
jar进程正在运行

[root@bogon www]# ps -ef|grep java
root      2693  2677  0 15:14 ?        00:00:00 /bin/sh -c java -jar /bh-user-service.jar
root      2715  2693  2 15:14 ?        00:00:27 java -jar /bh-user-service.jar
root      2972  1704  0 15:31 pts/0    00:00:00 grep --color=auto java