fix: provide Snell port defaults for initial sync

servers/bwh-hk-dc3/snell/compose.yaml

@@ -8,7 +8,7 @@ services:
     image: local/snell-server:5.0.1
     restart: unless-stopped
     ports:
-      - "${HOST_PORT}:9102/tcp"
+      - "${HOST_PORT:-47854}:9102/tcp"
     environment:
       PSK: ${PSK}
       PORT: 9102
@@ -17,4 +17,3 @@ services:
       options:
         max-size: 200k
         max-file: "2"
-

servers/bwh-us-dc9/snell/compose.yaml

@@ -10,10 +10,9 @@ services:
     network_mode: host
     environment:
       PSK: ${PSK}
-      PORT: ${PORT}
+      PORT: ${PORT:-9102}
     logging:
       driver: json-file
       options:
         max-size: 200k
         max-file: "2"
-