使用公共tomcat镜像构建,
1、确保已经启动了dockers服务

[root@localhost ~]# systemctl status docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2019-08-11 11:23:20 CST; 21h ago
Docs: http://docs.docker.com
Main PID: 26466 (dockerd-current)
...

2、从公共仓库下载tomcat镜像

[root@localhost ~]# docker search tomcat -->查看公共仓库内镜像
INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED
docker.io docker.io/tomcat Apache Tomcat is an open source implementa... 2491 [OK]
docker.io docker.io/tomee Apache TomEE is an all-Apache Java EE cert... 66 [OK]
docker.io docker.io/dordoka/tomcat Ubuntu 14.04, Oracle JDK 8 and Tomcat 8 ba... 53 [OK]
docker.io docker.io/bitnami/tomcat Bitnami Tomcat Docker Image 29 [OK]

[root@localhost ~]# docker pull tomcat -->我之前已经下载好了
Using default tag: latest
Trying to pull repository docker.io/library/tomcat ...
latest: Pulling from docker.io/library/tomcat
Digest: sha256:2785fac92d1bcd69d98f2461c6799390555a41fd50d3f847b544368d594c637b
Status: Image is up to date for docker.io/tomcat:latest

[root@localhost ~]# docker images -->查看本地镜像
REPOSITORY TAG IMAGE ID CREATED SIZE
docker.io/tomcat latest 238e6d7313e3 3 weeks ago 506 MB

3、运行容器

[root@localhost test]# pwd
/data/test
[root@localhost test]# docker run --name mytomcat -p 8080:8080 -v $PWD/test:/usr/local/tomcat/webapps/test -d tomcat
注:
--name 容器的名称
-p 端口映射,将容器的8080端口映射到当前主机的8080端口上
-v 挂载目录 $PWD当前目录 将容器的test目录挂载到本地的$PWD/test上
-d 指定镜像
35468d20e2b0f16ed05153eb0ecbcb26615446e04c6cae76dd68e3c669454249
[root@localhost test]# docker ps -->名为mytomcat的容器已经启动
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
35468d20e2b0 tomcat "catalina.sh run" 6 seconds ago Up 6 seconds 0.0.0.0:8080->8080/tcp mytomcat
请求浏览器访问
docker实战,使用公共tomcat镜像构建tomcat服务

4、维护

[root@localhost ~]# docker cp test/adveranaly.war d4b3b0382a72 :/usr/local/tomcat/webapps --> 上传war包
[root@localhost ~]# docker exec -it mytomcat /bin/bash -->查看容器内的war包
root@d4b3b0382a72:/usr/local/tomcat#
root@d4b3b0382a72:/usr/local/tomcat# ls
BUILDING.txt LICENSE README.md RUNNING.txt conf lib native-jni-lib webapps
CONTRIBUTING.md NOTICE RELEASE-NOTES bin include logs temp work
root@d4b3b0382a72:/usr/local/tomcat# cd webapps/
root@d4b3b0382a72:/usr/local/tomcat/webapps# ls
adveranaly.war
[root@localhost ~]# docker restart mytomcat -->重启容器
[root@localhost ~]# docker exec -it mytomcat /bin/bash
root@d4b3b0382a72:/usr/local/tomcat# ls
BUILDING.txt LICENSE README.md RUNNING.txt conf lib native-jni-lib webapps
CONTRIBUTING.md NOTICE RELEASE-NOTES bin include logs temp work
root@d4b3b0382a72:/usr/local/tomcat# cd webapps/
root@d4b3b0382a72:/usr/local/tomcat/webapps# ls -->确认已经执行
ROOT adveranaly adveranaly.war