【转】docker构建springboot项目

原文链接：https://www.cnblogs.com/zhenghengbin/p/11619915.html
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编写Dockerfile

# 基础镜像使用java
FROM java:8
# 作者
MAINTAINER kevin <[email protected]>
# VOLUME 指定了临时文件目录为/tmp。
# 其效果是在主机 /var/lib/docker 目录下创建了一个临时文件，并链接到容器的/tmp
VOLUME /tmp
# 将jar包添加到容器中并更名为app.jar
ADD kevin-admin-0.0.1-SNAPSHOT.jar app.jar
# 运行jar包
RUN bash -c 'touch /app.jar'
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

整体目录结构如下：

生成docker镜像

1、运行mvn install 将项目打包成jar包
2、复制jar包和Dockerfile文件到一个文件夹下
3、进入该文件夹，然后运行 docker build -t kevin-boot .

$ docker build -t kevin-boot .
Sending build context to Docker daemon  37.17MB
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 : MAINTAINER kevin <[email protected]>
 ---> Running in 5221f818f2b5
Removing intermediate container 5221f818f2b5
 ---> 87c87989d791
Step 3/6 : VOLUME /tmp
 ---> Running in 6c23e4541df0
Removing intermediate container 6c23e4541df0
 ---> 62ff9644cf44
Step 4/6 : ADD kevin-admin-0.0.1-SNAPSHOT.jar app.jar
 ---> a3362f0f3ce0
Step 5/6 : RUN bash -c 'touch /app.jar'
 ---> Running in a40ec77f3c91
Removing intermediate container a40ec77f3c91
 ---> 4e3417d31bd4
Step 6/6 : ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
 ---> Running in b8f66a99abc3
Removing intermediate container b8f66a99abc3
 ---> 9c7986106945
Successfully built 9c7986106945
Successfully tagged kevin-boot:latest

4.检查是否已经存在镜像 docker images

$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
kevin-boot          latest              9c7986106945        40 seconds ago      718MB
java                8                   d23bdf5b1b1b        2 years ago         643MB

运行kevin-boot镜像

docker run -d -p 8099:8080 kevin-boot

这里我自己用的运行命令：docker run --name postman -d -p 8091:8091 postman