fix build script

Author: medyo

script/build.sh

@@ -3,15 +3,15 @@
 build() {
     echo 'building react'
 
-    rm -rf dist/*
+    rm -rf dist
 
     export INLINE_RUNTIME_CHUNK=false
     export GENERATE_SOURCEMAP=false
 
     react-scripts build
 
     mkdir -p dist
-    cp -r build/* dist
+    cp -r build/* dist/
 }
 
 build