用springboot直接build docker image

Spring boot

pom.xml

這邊接續上篇springboot 切換application.properties, 於是pom 檔中會需要辨別local及prod
設定好之後可以在 中決定 name

<build>
       <resources>
           <resource>
               <directory>src/main/resources/config</directory>
               <filtering>true</filtering>
               <includes>
                   <include>application-${active.profile}.properties</include>
               </includes>
           </resource>
       </resources>
       <plugins>
           <plugin>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-maven-plugin</artifactId>
               <configuration>
                   <image>
                       <name>df-eip</name>
                   </image>
               </configuration>
           </plugin>
       </plugins>
   </build>
   <profiles>
       <profile>
           <id>local</id>
           <properties>
               <active.profile>local</active.profile>
           </properties>
       </profile>
       <profile>
           <id>prod</id>
           <properties>
               <active.profile>prod</active.profile>
           </properties>
       </profile>
   </profiles>

build docker image

使用springboot 的指令即可建置出image

spring-boot:build-image -P local

首次建會載image 'docker.io/paketobuildpacks/builder:base 會花不少時間， 建完之後查看

docker image ls

• output

  REPOSITORY	TAG	IMAGE ID	CREATED	SIZE
  df-eip-app	latest	23d63a5da6d9	53 minutes ago	463MB

docker compose

version: '3'
services:
  app:
    image: df-eip:latest
    ports:
      - "80:80"
    depends_on:
      - redis
  redis:
    image: "redis:alpine"
    ports:
      - "6379:6379"

docker run

docker-compose up

Docker 啟動!