docker image push to GOOGLE CONTAINER REGISTERY from gitlab CI

purpose: build the application ,build docker image and push to GCR from gilab CI

the belwo code is the reference of GCR push

image: maven:3.3.9-jdk-8
stages:  
 - build 
 - ecrpush  
build: 
 stage: build
 tags: - java 
 script:   
   - mvn clean package
bala-push:  
  stage: ecrpush 
  tags: - java 
  image:    
    name: gcr.io/kaniko-project/executor:debug    
    entrypoint: [""] 
  script:  
    - echo "{\"credsStore\":\"ecr-login\",\"credHelpers\":{\"$AWS_ACCOUNT_ID.dkr.ecr.$region.amazonaws.com\":\"ecr-login\"}}" > /kaniko/.docker/config.json 
    - /kaniko/executor --context $CI_PROJECT_DIR --dockerfile $CI_PROJECT_DIR/Dockerfile --destination $AWS_REPOSITORY:$CI_COMMIT_TAG