Separate port for prometheus metrics

Add Prometheus metrics [Feat]: Simple Stats API #1285

docker-compose.yml

@@ -14,6 +14,7 @@ services:
       # Optional:
       # - PASSWORD_HASH=$$2y$$10$$hBCoykrB95WSzuV4fafBzOHWKu9sbyVa34GJr8VV5R/pIelfEMYyG (needs double $$, hash of 'foobar123'; see "How_to_generate_an_bcrypt_hash.md" for generate the hash)
       # - PORT=51821
+      # - PROMETHEUS_METRICS_PORT=9586
       # - WG_PORT=51820
       # - WG_CONFIG_PORT=92820
       # - WG_DEFAULT_ADDRESS=10.8.0.x
@@ -39,6 +40,7 @@ services:
     ports:
       - "51820:51820/udp"
       - "51821:51821/tcp"
+      - "9586:9586/tcp"
     restart: unless-stopped
     cap_add:
       - NET_ADMIN