Upgraded and refactored Traefik (#585)

docker-compose-generator/docker-fragments/btcpayserver.yml

@@ -1,7 +1,6 @@
 version: "3"
 
 services:
-
   btcpayserver:
     restart: unless-stopped
     image: ${BTCPAY_IMAGE:-btcpayserver/btcpayserver:1.5.4$<BTCPAY_BUILD_CONFIGURATION>?}
@@ -21,6 +20,10 @@ services:
       BTCPAY_DEBUGLOG: btcpay.log
       BTCPAY_UPDATEURL: https://api.github.com/repos/btcpayserver/btcpayserver/releases/latest
       BTCPAY_DOCKERDEPLOYMENT: "true"
+    labels:
+      traefik.enable: true
+      traefik.http.routers.btcpayserver.rule: Host(`${BTCPAY_HOST}`)
+      # Traefic can not accept list from BTCPAY_ADDITIONAL_HOSTS, see Traefik/README.md
     links:
       - postgres
     volumes: