Spring boot gradle build and push docker image - spring

Question

I trying to build and push the docker image to my docker hub.After building 90% I am getting error
D:\demo>gradlew jib
> Task :jib
Containerizing application to nithin4325/my-java-image...
Container entrypoint set to [java, -cp, /app/resources:/app/classes:/app/libs/*,
com.example.demo.DemoApplication]
Executing tasks:
[=========================== ] 90.0% complete
> building image to registry
> Task :jib FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':jib'.
> com.google.cloud.tools.jib.plugins.common.BuildStepsExecutionException: Build
image failed, perhaps you should make sure your credentials for 'nithin4325/my-j
ava-image' are set up correctly.
build.gradle:
plugins {
id 'org.springframework.boot' version '2.2.2.RELEASE'
id 'io.spring.dependency-management' version '1.0.8.RELEASE'
id 'java'
id 'com.google.cloud.tools.jib' version '1.4.0'
}
group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'
repositories {
mavenCentral()
}
jib{
to
{
image = 'nithin4325/my-java-image'
}
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
compile group: 'org.springframework.boot', name: 'spring-boot-starter-parent', version: '2.2.2.RELEASE', ext: 'pom'
testImplementation('org.springframework.boot:spring-boot-starter-test') {
exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
}
}
I am using windows 7 professional having docker toolbox.I already logged in to dockerhub through command prompt using docker login.