docker-automatic-nginx-letsencrypt/docker-compose.override.htt...

---
version: '2'

services:

  # letsencrypt-http uses the HTTP-01 challenge to verify ownership. The
  # well-known files must be served by a webserver.
  letsencrypt-http:
    image: csmith/letsencrypt-http-01:latest
    container_name: autoproxy_letsencrypt-http
    restart: always
    volumes:
      - letsencrypt-data:/letsencrypt
    environment:
      # For testing purposes, use the Let's Encrypt staging server.
      # Remove this for production use!
      - STAGING=yes
      # To accept Let's Encrypt's temrs of service automatically:
      #- ACCEPT_CA_TERMS=yes
      # The e-mail address to provide to Let's Encrypt.
      - EMAIL=your@email.addr
      # Any environment variables your hook needs
      - MY_SECRET=1234567890123456789012345678901234567890