build.gradle

buildscript {
    repositories {
        maven { url "https://plugins.gradle.org/m2/" }
    }
    dependencies {
        classpath "io.github.gradle-nexus:publish-plugin:1.3.0"
    }
}

version = project.projectVersion

ext.isSnapshot = project.projectVersion.endsWith('-SNAPSHOT')
ext.isReleaseVersion = !isSnapshot

if (isReleaseVersion) {
    apply plugin: 'maven-publish'
    apply plugin: "io.github.gradle-nexus.publish-plugin"

    nexusPublishing {
        repositories {
            sonatype {
                def ossUser = System.getenv("SONATYPE_USERNAME") ?: project.hasProperty("sonatypeOssUsername") ? project.sonatypeOssUsername : ''
                def ossPass = System.getenv("SONATYPE_PASSWORD") ?: project.hasProperty("sonatypeOssPassword") ? project.sonatypeOssPassword : ''
                def ossStagingProfileId = System.getenv("SONATYPE_STAGING_PROFILE_ID") ?: project.hasProperty("sonatypeOssStagingProfileId") ? project.sonatypeOssStagingProfileId : ''
                nexusUrl = uri("https://s01.oss.sonatype.org/service/local/")
                username = ossUser
                password = ossPass
                stagingProfileId = ossStagingProfileId
            }
        }
    }
}