docker-compose for easy startup of GSNv1 relay

.env

HOST=myhost.com
NODE_URL=https://mainnet.infura.io/v3/c3422181d0594697a38defe7706a1e5b
RELAY_HUB=0xD216153c06E857cD7f72665E0aF1d7D82172F494
GAS_PRICE_PERCENT=70

docker-compose.yml

#usage: 
#- edit .env file with your host name and infura URL,
#- run: docker-compose up -d
#- curl https://myhost.com/getaddr
#- write down the relay address
#- fund the relay (script from GSNv1: https://github.com/opengsn/gsn/blob/13fa9d029bfa8858519e25ca6f16e717d695bdab/scripts/fundrelay.js)
#  - ./scripts/fundrelay.js RELAY_HUB_ADDRESS 'https://example.com' 0 PROVIDER_URL

version: '3'
  
services:
  https-portal:
    image: steveltn/https-portal:1
    ports:
      - '80:80'
      - '443:443'
    restart: always
    environment:
      DOMAINS: '${HOST} -> http://gsn1'
      STAGE: 'production'

  gsn1:
    image: dmihal/gsn-relay-xdai
    restart: always
    volumes:
      - ./gsn1-data:/app/data
    environment:
      URL: https://${HOST}
      LOCAL_PORT: 80
      NODE_URL: ${NODE_URL}
      RELAY_HUB: "${RELAY_HUB}"
      GAS_PRICE_PERCENT: ${GAS_PRICE_PERCENT}