Docker 镜像运行时区不准确处理

启动 tomcat 容器时发现容器时间与本地时间不一致，相差 8 个小时

docker run -d --rm -p 8888:8080 tomcat:latest

# 查看容器 ID
docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                    NAMES
94855160f395        tomcat:latest       "catalina.sh run"   3 seconds ago       Up 2 seconds        0.0.0.0:8888->8080/tcp   determined_chandrasekhar

# 进入容器查看时间
docker exec -it 94855160f395 /bin/bash
root@94855160f395:/usr/local/tomcat# date
Wed May  9 03:10:55 UTC 2018
root@94855160f395:/usr/local/tomcat# exit
exit

# 关闭容器
docker stop 94855160f395
94855160f395

添加 -v /etc/localtime:/etc/localtime 参数重新启动容器

docker run -d -v /etc/localtime:/etc/localtime --rm -p 8888:8080 tomcat:latest

# 再次进入容器查看时间
docker exec -it f232d09a5 /bin/bash

root@f232d09a5d79:/usr/local/tomcat# date
Wed May  9 11:11:48 CST 2018