1，docker 下載tomcat

[root@it-1c2d ~]# docker pull tomcat
 ...
[root@it-1c2d ~]# docker images
REPOSITORY                                                                    TAG        IMAGE ID       CREATED         SIZE
tomcat                                                                        latest     6313f84af805   
 
4 days ago      680MB

2，docker安裝

[root@it-1c2d webnav]# docker run --name tomcat -p 8081:8080 -v /ZT/webnav/:/usr/local/tomcat/webapps -d tomcat 
311dcda238320954eaf01d109d017c3dd675ece66c41a05b365599ac85346a71
[root@it-1c2d webnav]# docker ps
CONTAINER ID   IMAGE          COMMAND                  CREATED          STATUS          PORTS                                                                      NAMES
311dcda23832   tomcat         
 
"catalina.sh run"        15 seconds ago   Up 14 seconds   0.0.0.0:8081->8080/tcp, :::8081->8080/tcp                                  tomcat
e6b306df750b   nginx          "/docker-entrypoint.…"   6 weeks ago      Up 6 weeks      0.0.0.0:80->80/tcp, :::80->80/tcp, 0.0.0.0:443->443/tcp, :::443->443/tcp   nginx
04b2dde69bbe   wiki0829       
 
"docker-entrypoint.s…"   6 weeks ago      Up 6 weeks      3443/tcp, 0.0.0.0:8080->3000/tcp, :::8080->3000/tcp                        wiki
fdfc369cacfa   mysql:latest   "docker-entrypoint.s…"   5 months ago     Up 6 weeks      0.0.0.0:3306->3306/tcp, :::3306->3306/tcp, 33060/tcp

其中：用 -v 指令指定把容器中的某個資料夾掛載到宿主機中
它的語法為： -v 宿主機目錄:容器目錄

-d: 後臺執行容器，並返回容器ID