feat: add listen port from env

.env

@@ -9,7 +9,7 @@
 
 # General
 
-# The path to save the data.
+# The path to save the data
 # string
 # (optional)
 # Saving logs (if the full path is not specified),
@@ -18,6 +18,12 @@
 # If you want to change this value, you need to change the values in Settings.json and move the file itself to the desired location.
 PATH_TO_SAVE=
 
+# Internal port configuration
+# integer
+# (optional)
+# Specify the internal port on which the server will listen.
+INTERNAL_PORT=
+
 # Security
 
 # JWT signature token