Why docker image build throws /usr/bin/env: ‘sh\r’: No such file or directory?

Building docker image....... /usr/bin/env: ‘sh\r’: No such file or directory execution failed

complete script

#!/bin/bash
 echo "Building docker image......."
. gradle.properties
 IMAGE="$dockerRegistry/$1"
 IMAGE_TAG="$releaseVersion-$(git log -1 --pretty=%h)"
 if ./gradlew clean :$1:jibDockerBuild -x test; then
 echo "Pushing docker image...."
 docker tag $IMAGE $IMAGE:$IMAGE_TAG
 docker push $IMAGE:$IMAGE_TAG
 else
 echo "execution failed"
 exit 1
  fi
 exit 0