yet another variable change

apps/kopia/docker-compose.json

@@ -10,7 +10,7 @@
         "--disable-csrf-token-checks",
         "--tls-cert-file=/app/certs/my.cert",
         "--tls-key-file=/app/certs/my.key",
-        "--address=0.0.0.0:${APP_PORT}",
+        "--address=0.0.0.0:51515",
         "--server-username=${USER}",
         "--server-password=${PASSWORD}"
       ],
@@ -32,10 +32,9 @@
           "value": "${USER}"
         }
       ],
-      "internalPort": 51515,
       "addPorts": [
 	      {"containerPort":51515,
-		      "hostPort":51200,
+		      "hostPort":"$APP_PORT",
 		      "tcp":true,
 		      "udp":false}
       ],