Jib Plugin to push dockerimage to Nexus repository is not working

Question

I have created a file named jib.plugin in my gradle project and applied that file to build.gradle

PFA my jib.gradle file

    {
    allowInsecureRegistries = true
        from {
            image = "azul/zulu-openjdk-alpine"
        }
        to {
            image = "repo.<domain>.com/repository/<repository-name>/$project.name" // myprivate hosted nexus repository
            auth {
                username = "admin"
                password = "***********"
            }
            tags = ['latest']
        }
    }

Note; I have not enabled any http connector port options in my nexus repository

When I run jib:build, it downloads the image, but it is failing to push the image file I'm getting following error when I do so.

Error shows like