拉取镜像

  1. docker pull tomcat:9.0

启动Tomcat

  1. [root@izj6cev682kqg86i4ogj8rz ~]# docker images
  2. REPOSITORY    TAG       IMAGE ID       CREATED        SIZE
  3. nginx         latest    605c77e624dd   5 months ago   141MB
  4. tomcat        9.0       b8e65a4d736d   5 months ago   680MB
  5. tomcat        latest    fb5657adc892   5 months ago   680MB
  6. mysql         latest    3218b38490ce   5 months ago   516MB
  7. hello-world   latest    feb5d9fea6a5   8 months ago   13.3kB
  8. centos        latest    5d0da3dc9764   8 months ago   231MB
  9. [root@izj6cev682kqg86i4ogj8rz ~]# docker ps
  10. CONTAINER ID   IMAGE     COMMAND       CREATED       STATUS       PORTS     NAMES
  11. 08e8a0cbc58e   centos    "/bin/bash"   4 hours ago   Up 4 hours             gracious_chaum
  12. [root@izj6cev682kqg86i4ogj8rz ~]# docker run -d -p 3355:8080 --name tomcat02 tomcat
  13. 4a76a3c72b2378231dbd38371006112b9f48a9d43dfea0c79e38be06f5debe27
  14. [root@izj6cev682kqg86i4ogj8rz ~]# docker ps
  15. CONTAINER ID   IMAGE     COMMAND             CREATED          STATUS          PORTS                    NAMES
  16. 4a76a3c72b23   tomcat    "catalina.sh run"   13 seconds ago   Up 12 seconds   0.0.0.0:3355->8080/tcp   tomcat02
  17. 08e8a0cbc58e   centos    "/bin/bash"         4 hours ago      Up 4 hours                               gracious_chaum
  18. [root@izj6cev682kqg86i4ogj8rz ~]#

参数意义：

  • -d：后台运行
  • -p：端口暴露映射
  • —name：给容器取一个名字

:::danger 注意：
这时候访问服务器的3355端口，会出现404错误，但是tomcat部署上去了。
进入容器会发现linux命令少了，没有webapps。这是阿里云镜像的原因，默认是最小镜像，所有不必要的都要剔除掉，保证最小可以运行的环境。 :::

进入容器修改让Tomcat初始页面显示出来

  1. [root@izj6cev682kqg86i4ogj8rz ~]# docker exec -it tomcat02 /bin/bash
  2. root@4a76a3c72b23:/usr/local/tomcat# ls
  3. BUILDING.txt     LICENSE  README.md     RUNNING.txt  conf  logs        temp     webapps.dist
  4. CONTRIBUTING.md  NOTICE   RELEASE-NOTES  bin          lib   native-jni-lib  webapps  work
  5. root@4a76a3c72b23:/usr/local/tomcat# cp -r webapps.dist/* webapps
  6. root@4a76a3c72b23:/usr/local/tomcat# cd webapps
  7. root@4a76a3c72b23:/usr/local/tomcat/webapps# ls
  8. ROOT  docs  examples  host-manager  manager
  9. root@4a76a3c72b23:/usr/local/tomcat/webapps#