Update build.sh

build.sh

@@ -17,9 +17,12 @@ mvn clean >/dev/null 2>&1
 mvn package -Dmaven.test.skip=true >/dev/null 2>&1
 
 echo "zip finish in build dir"
-mkdir $BuildDir/build
+if [ ! -d "$BuildDir/build" ]; then
+    mkdir $BuildDir/build
+fi
 mv $BuildDir/report-core/target/report-core-1.0.0-SNAPSHOT-assembly.zip $BuildDir/build/
 
+
 cd $BuildDir/
 rm -rf $BuildDir/report-core/src/main/resources/static
 git reset --hard >/dev/null 2>&1