阿里云镜像下载的tomcat 启动后发现tomcat正常运行了但是无法进入首页
Tomcat:9.0.41

原因是：

使用阿里云获取tomcat镜像，其webapps文件为空，其欢迎页都放在webapps.dist文件中

解决方法：

把webapps.dist更名为 webapps即可

root@wang-virtual-machine:~# docker exec -it a116cbeadf1a /bin/bash
root@a116cbeadf1a:/usr/local/tomcat# ls
BUILDING.txt	 LICENSE  README.md	 RUNNING.txt  conf  logs	    temp     webapps.dist
CONTRIBUTING.md  NOTICE   RELEASE-NOTES  bin	      lib   native-jni-lib  webapps  work
root@a116cbeadf1a:/usr/local/tomcat# cd webapps
root@a116cbeadf1a:/usr/local/tomcat/webapps# ls
root@a116cbeadf1a:/usr/local/tomcat/webapps# cd ..
root@a116cbeadf1a:/usr/local/tomcat# cd webapps.dist/
root@a116cbeadf1a:/usr/local/tomcat/webapps.dist# ls
ROOT  docs  examples  host-manager  manager
root@a116cbeadf1a:/usr/local/tomcat/webapps.dist# cd ..
root@a116cbeadf1a:/usr/local/tomcat# mv webapps webapps.bak
root@a116cbeadf1a:/usr/local/tomcat# ls
BUILDING.txt	 LICENSE  README.md	 RUNNING.txt  conf  logs	    temp	 webapps.dist
CONTRIBUTING.md  NOTICE   RELEASE-NOTES  bin	      lib   native-jni-lib  webapps.bak  work
root@a116cbeadf1a:/usr/local/tomcat# mv webapps.dist webapps
root@a116cbeadf1a:/usr/local/tomcat# ls
BUILDING.txt	 LICENSE  README.md	 RUNNING.txt  conf  logs	    temp     webapps.bak
CONTRIBUTING.md  NOTICE   RELEASE-NOTES  bin	      lib   native-jni-lib  webapps  work
root@a116cbeadf1a:/usr/local/tomcat# exit
exit

oot@wang-virtual-machine:~# docker container ls -all
CONTAINER ID   IMAGE     COMMAND             CREATED          STATUS                        PORTS     NAMES
a116cbeadf1a   tomcat    "catalina.sh run"   37 minutes ago   Exited (130) 29 minutes ago             sharp_hodgkin
root@wang-virtual-machine:~# docker exec -it a116cbeadf1a /bin/bash
Error response from daemon: Container a116cbeadf1ab54198bf80c3c3cac058c1279b66c96fba5c1a67edb8e83bccce is not running
root@wang-virtual-machine:~# docker start a116cbeadf1a 
a116cbeadf1a
root@wang-virtual-machine:~# docker exec -it a116cbeadf1a /bin/bash
root@a116cbeadf1a:/usr/local/tomcat# ls