Docker 邊做邊學 (4) Dockerfile+Dockcompose

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以tomcat+Jenkins為例，透過Dockerfile到jenkins官方下載war包同時構建鏡像，最後用Dockcompose創建容器。

  1. 新建檔案 Dockerfile 並貼上以下內容：
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FROM tomcat:latest
RUN wget http://mirrors.jenkins.io/war-stable/latest/jenkins.war
RUN cp jenkins.war /usr/local/tomcat/webapps/jenkins.war
  1. 新建檔案 docker-compose.yml 並貼上以下內容：
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version: '2'
services:
  tomcat:
    build: .
    ports:
    - 8085:8080/tcp
    - 50005:50000/tcp
  1. 啟動
  • docker-compose
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docker-compose up -d --build

  • docker ps
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CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                                              NAMES
3d4d47d03920        jenkins_tomcat      "catalina.sh run"   3 minutes ago       Up 3 minutes        0.0.0.0:8085->8080/tcp, 0.0.0.0:50005->50000/tcp   jenkins_tomcat_1
  • docker images
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REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
jenkins_tomcat      latest              49636ae7145a        10 minutes ago      614MB
tomcat              latest              9f1191b287da        2 weeks ago         465MB
  1. 訪問Jenkins