Add some more documentation to environment variables

.env.tpl

@@ -125,12 +125,14 @@ NOPAQUE_ADMIN=
 # NOPAQUE_DAEMON_ENABLED=
 
 # The hostname or IP address for the server to listen on.
-# HINT: To use a domain locally, add any names that should route to the app to your hosts file.
 # DEFAULT: 0.0.0.0
+# NOTES: To use a domain locally, add any names that should route to the app to your hosts file.
+#        If nopaque is running in a Docker container, you propably want to use the default value.
 # NOPAQUE_HOST=
 
 # The port number for the server to listen on.
 # DEFAULT: 5000
+# NOTE: If nopaque is running in a Docker container, you propably want to use the default value.
 # NOPAQUE_PORT=
 
 # transport://[userid:password]@hostname[:port]/[virtual_host]