feat: further improvement of the build and compress script

build.sh

@@ -1,7 +1,12 @@
 #!/bin/bash
 cd build
 cmake --build .
-echo "dd bs=1 skip=61<\$0|unlzma>/tmp/C;chmod +x /tmp/C;/tmp/C;exit" > two
+CMD="#!/bin/bash
+dd bs=1 skip=%s<\$0|unlzma>/tmp/C;chmod +x /tmp/C;trap '' HUP;/tmp/C&"
+COUNT=$(printf "$CMD" | wc -c)
+EXTRA=$(printf "$COUNT" | wc -c)
+COUNT=$((COUNT + EXTRA + 1))
+echo "$CMD" | sed 's/%s/'"$COUNT"'/' > two
 chmod +x two
 sstrip one
 lzma -9 one