spring boot创建docker镜像，并推送到私有仓库

1、将项目打包成 jar 包

tomkluas-0.0.1-SNAPSHOT.jar

2、复制 jar 文件至 docker 镜像制作机器，创建Dockerfile 文件

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ADD tomkluas-0.0.1-SNAPSHOT.jar app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

文件目录如下：

[root@localhost]# ls
tomkluas-0.0.1-SNAPSHOT.jar  Dockerfile

3、创建镜像

# -t tag 给镜像打标签
# . 为当前目录
[root@localhost air]# docker build -t tomkluas:v1 .
Sending build context to Docker daemon   39.8MB
Step 1/4 : FROM openjdk:8-jdk-alpine
8-jdk-alpine: Pulling from library/openjdk
e7c96db7181b: Pull complete 
f910a506b6cb: Pull complete 
c2274a1a0e27: Pull complete 
Digest: sha256:94792824df2df33402f201713f932b58cb9de94a0cd524164a0f2283343547b3
Status: Downloaded newer image for openjdk:8-jdk-alpine
 ---> a3562aa0b991
tep 2/4 : VOLUME /tmp
 ---> Running in af5ab6d97079
Removing intermediate container af5ab6d97079
 ---> 450bb894696d
Step 3/4 : ADD tomkluas-0.0.1-SNAPSHOT.jar app.jar
 ---> 642cefdc3239
Step 4/4 : ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
 ---> Running in 2941b6eceb00
Removing intermediate container 2941b6eceb00
 ---> 8849b2bd77e7
Successfully built 8849b2bd77e7
Successfully tagged tomkluas:v1

4、查看镜像

[root@localhost ~]# docker images tomkluas
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
tomkluas           v1                  8849b2bd77e7        31 minutes ago      145MB

5、创建容器，测试是否能正确运行

docker run -d --name tomkluasV1 -p 8090:8080 tomkluas:v1

 测试访问正常

6、登录仓库

docker login https://hub.mysite.com

依次输入账号密码登录

7、将镜像打标签

docker tag 8849b2bd77e7 hub.mysite.com/tom/tomkluas:v1

8、推送标签到hub

docker push hub.mysite.com/tom/tomkluas:v1

至此，镜像已经推送至hub，后续可在部署的机器上拉取镜像、创建实例。