springBoot微服务打包成docker镜像

springBoot微服务打包成docker镜像

使用docker跑服务非常方便，不需要在服务实例上繁琐的安装运行环境，通过编写dockefile快速构建镜像，能够快速运行应用，开发首选

1、准备jar包

2、编写DockerFile

3、上传，build生成镜像

[root@VM-8-9-centos test]# ls
Dockerfile  test-0.0.1-SNAPSHOT.jar
[root@VM-8-9-centos test]# docker build -f Dockerfile  -t springboot-image
"docker build" requires exactly 1 argument.
See 'docker build --help'.

Usage:  docker build [OPTIONS] PATH | URL | -

Build an image from a Dockerfile
[root@VM-8-9-centos test]# docker build -f Dockerfile  -t springboot-image .
Sending build context to Docker daemon   17.6MB
Step 1/5 : FROM java:8
8: Pulling from library/java
5040bd298390: Pull complete 
fce5728aad85: Pull complete 
76610ec20bf5: Pull complete 
60170fec2151: Pull complete 
e98f73de8f0d: Pull complete 
11f7af24ed9c: Pull complete 
49e2d6393f32: Pull complete 
bb9cdec9c7f3: Pull complete 
Digest: sha256:c1ff613e8ba25833d2e1940da0940c3824f03f802c449f3d1815a66b7f8c0e9d
Status: Downloaded newer image for java:8
 ---> d23bdf5b1b1b
Step 2/5 : COPY *.jar /app.jar
 ---> 3a53cad9ae39
Step 3/5 : CMD ["--server.port=8080"]
 ---> Running in b53ca055dafd
Removing intermediate container b53ca055dafd
 ---> 3aa1b8767fea
Step 4/5 : EXPOSE 8080
 ---> Running in 20c50a75f15c
Removing intermediate container 20c50a75f15c
 ---> b8e7072c5ae8
Step 5/5 : ENTRYPOINT ["java","-jar","/app.jar"]
 ---> Running in 5edbe3e7a251
Removing intermediate container 5edbe3e7a251
 ---> d99e96e3c5dd
Successfully built d99e96e3c5dd
Successfully tagged springboot-image:latest

4、运行容器，访问

[root@VM-8-9-centos test]# docker images
REPOSITORY         TAG                               IMAGE ID       CREATED              SIZE
springboot-image   latest                            d99e96e3c5dd   About a minute ago   661MB
tomcat-image       1.0                               271418e6337f   36 hours ago         638MB
tomcat             9.0.48-jdk8-adoptopenjdk-openj9   d716ed54947b   5 days ago           386MB
redis              latest                            fad0ee7e917a   2 weeks ago          105MB
nginx              latest                            d1a364dc548d   3 weeks ago          133MB
mysql              8.0.25                            c0cdc95609f1   5 weeks ago          556MB
centos             latest                            300e315adb2f   6 months ago         209MB
java               8                                 d23bdf5b1b1b   4 years ago          643MB
[root@VM-8-9-centos test]# docker run -d -p 9999:8080 --name springboot-test springboot-image