Run multiple docker apps using single nginx container with dynamic template.
Usage:
---
version: '3.7'
services:
.....
environment:
....
VIRTUAL_HOST: app1.example.com
VIRTUAL_PORT: 9000
---
version: '3.7'
services:
.....
environment:
....
VIRTUAL_HOST: app2.example.com
VIRTUAL_PORT: 9001