如何在各种情况下向build.gradle文件传递Maven (Nexus)凭据？

repositories {
    maven {
        url "https://nexus.example.com/repository/maven-public/"
        credentials {
            username 'your-username'
            password 'your-password'
        }
    }
}

repositories {
    maven {
        url "https://nexus.example.com/repository/maven-public/"
        credentials {
            username System.getenv('NEXUS_USERNAME')
            password System.getenv('NEXUS_PASSWORD')
        }
    }
}

nexusUsername=your-username
nexusPassword=your-password

repositories {
    maven {
        url "https://nexus.example.com/repository/maven-public/"
        credentials {
            username nexusUsername
            password nexusPassword
        }
    }
}