Fix some more issues in the installer

install

@@ -55,6 +55,12 @@ addfiles(){
 	fi
 }
 
+setup(){
+	install -m500 -o telelog -g telelog bin/setup /tmp/setup
+	su telelog -s /usr/bin/python3 /tmp/setup
+	rm /tmp/setup
+}
+
 # Install dependencies
 [ $(which apt) ] && apt install python3-pip
 [ $(which apk) ] && apk add py3-pip
@@ -68,7 +74,7 @@ mkuser
 
 # Run Telethon for the first time
 umask 0077
-[ -f setup.py ] && su bot -s /usr/bin/python3 $PWD/setup
+[ -f bin/setup ] && setup
 
 # Start the service
 service telelog start