1、下载tomcat镜像

[root@localhost ~]# docker pull tomcat
Using default tag: latest
latest: Pulling from library/tomcat
0e29546d541c: Pull complete 
9b829c73b52b: Pull complete 
cb5b7ae36172: Pull complete 
6494e4811622: Pull complete 
668f6fcc5fa5: Pull complete 
dc120c3e0290: Pull complete 
8f7c0eebb7b1: Pull complete 
77b694f83996: Pull complete 
0f611256ec3a: Pull complete 
4f25def12f23: Pull complete 
Digest: sha256:9dee185c3b161cdfede1f5e35e8b56ebc9de88ed3a79526939701f3537a52324
Status: Downloaded newer image for tomcat:latest
docker.io/library/tomcat:latest
[root@localhost ~]# 

2、启动tomcat

[root@localhost ~]# docker run -d -p 8080:8080 --name tomcat9 tomcat
8b846fd358aa8a791522fbe0fbc7795eeea1a9980fa2af7af793317857c8ba36
[root@localhost ~]# docker ps -a
CONTAINER ID   IMAGE     COMMAND                  CREATED             STATUS          PORTS                                       NAMES
8b846fd358aa   tomcat    "catalina.sh run"        40 seconds ago      Up 39 seconds   0.0.0.0:8080->8080/tcp, :::8080->8080/tcp   tomcat9
7e501365832d   nginx     "/docker-entrypoint.…"   About an hour ago   Up 22 minutes   0.0.0.0:3500->80/tcp, :::3500->80/tcp       nginx01
[root@localhost ~]# 
[root@localhost ~]# docker exec -it tomcat9 /bin/bash
root@8b846fd358aa:/usr/local/tomcat# 
root@8b846fd358aa:/usr/local/tomcat# 

3、测试访问tomcat

浏览器输入http://宿主机ip:8080端口即可访问到tomcat页面