centos7下docker发布第一个微服务应用(Eureka)

1.在windows下打包

微服务应用通过maven进行打包，在项目的pom.xml执行mvn clean package，或者直接通过idea或者eclipse进行maven打包

之上操作将在项目的 target目录生成文件microservice-discovery-eureka-0.0.1-SNAPSHOT.jar 包

2.将microservice-discovery-eureka-0.0.1-SNAPSHOT.jar拷贝到Linux环境(可以通过CRT等连接方式)

3.在microservice-discovery-eureka-0.0.1-SNAPSHOT.jar所在的目录创建Dockerfile文件，内容如下

 FROM java:8

 VOLUME /tmp

 ADD microservice-discovery-eureka-0.0.1-SNAPSHOT.jar app.jar

 RUN bash -c 'touch /app.jar'

 EXPOSE 8761

 ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

4.通过docker build命令构建新的镜像

(注意：Dockerfile和jar包要在同一个文件夹下)

执行命令 docker build -t cakin24/microservice-discovery-eureka-0.0.1 .

 [root@localhost microfile]# ls
 Dockerfile  microservice-discovery-eureka-0.0.1-SNAPSHOT.jar
 [root@localhost microfile]# docker build -t cakin24/microservice-discovery-eureka-0.0.1 .
 Sending build context to Docker daemon  44.79MB
 Step 1/6 : 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 2/6 : VOLUME /tmp
  ---> Running in c6c8df634611
 Removing intermediate container c6c8df634611
  ---> 1bdb7dd203b9
 Step 3/6 : ADD microservice-discovery-eureka-0.0.1-SNAPSHOT.jar app.jar
  ---> d88f6144fb16
 Step 4/6 : RUN bash -c 'touch /app.jar'
  ---> Running in d217d42a3713
 Removing intermediate container d217d42a3713
  ---> b24c68563734
 Step 5/6 : EXPOSE 8761
  ---> Running in 2a2663de2b31
 Removing intermediate container 2a2663de2b31
  ---> 305d7a1bed02
 Step 6/6 : ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
  ---> Running in c7b7c777ee72
 Removing intermediate container c7b7c777ee72
  ---> 6e55e8eef9b1
 Successfully built 6e55e8eef9b1
 Successfully tagged cakin24/microservice-discovery-eureka-0.0.1:latest
 [root@localhost microfile]# docker images
 REPOSITORY                                           TAG                 IMAGE ID            CREATED             SIZE
 cakin24/microservice-discovery-eureka-0.0.1          latest              6e55e8eef9b1        24 seconds ago      733MB
 mysql                                                5.7                 e47e309f72c8        13 days ago         372MB
 hello-world                                          latest              fce289e99eb9        7 weeks ago         1.84kB
 java                                                 8                   d23bdf5b1b1b        2 years ago         643MB
 registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql   5.7                 ec7e75e5260c        3 years ago         360MB

5.执行以下命令 运行微服务

查看镜像 docker images  通过上面步骤可以看到当前多了一个Eureka的镜像，这个就是我们想要的

运行容器 docker run -d -p 8761:8761 cakin24/microservice-discovery-eureka-0.0.1

查看已经运行的容器情况  docker ps   可以看到Eureka已经在运行当中

 [root@localhost microfile]# docker images
 REPOSITORY                                           TAG                 IMAGE ID            CREATED             SIZE
 cakin24/microservice-discovery-eureka-0.0.1          latest              6e55e8eef9b1        24 seconds ago      733MB
 mysql                                                5.7                 e47e309f72c8        13 days ago         372MB
 hello-world                                          latest              fce289e99eb9        7 weeks ago         1.84kB
 java                                                 8                   d23bdf5b1b1b        2 years ago         643MB
 registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql   5.7                 ec7e75e5260c        3 years ago         360MB
 [root@localhost microfile]# docker run -d -p 8761:8761 cakin24/microservice-discovery-eureka-0.0.1
 bc05ffb47756bc1193f71c668acd2ddb51392de883dba3d6f26a786723d78397
 [root@localhost microfile]# docker ps
 CONTAINER ID        IMAGE                                         COMMAND                  CREATED             STATUS              PORTS                               NAMES
 bc05ffb47756        cakin24/microservice-discovery-eureka-0.0.1   "java -Djava.securit…"   11 seconds ago      Up 8 seconds        0.0.0.0:8761->8761/tcp              flamboyant_golick
 e778509d7366        mysql:5.7                                     "docker-entrypoint.s…"   About an hour ago   Up About an hour    0.0.0.0:3306->3306/tcp, 33060/tcp   pwc-mysql

6.查看运行效果

访问发布的容器对应的ip和端口 效果如下,