traefik 是一个api网关，还没学完，持续更新：
1搭建起来之后，需要根据TOML文件来进行请求配置，类似于struts2里面的前端控制器的一个xml：
version:
'3'
services:
reverse-proxy:
image:
traefik
# The official Traefik docker image
command:
--api --docker
# Enables the web UI and tells Træfik to listen to docker
ports:
-
"80:80"
# The HTTP port
-
"8080:8080"
# The Web UI (enabled by --api)
volumes:
-
/var/run/docker.sock:/var/run/docker.sock
# So that Traef
whoami:
image:
emilevauge/whoami
# A container that exposes an API to show its IP address
labels:
-
"traefik.frontend.rule:whoami.docker.localhost"