Understanding Gradle's mavenDeployer
uploadArchives {
    repositories.mavenDeployer {
        name = 'sshDeployer' // optional
        configuration = configurations.deployerJars
        repository(url: "scp://repos.mycompany.com/releases") {
            authentication(userName: "me", password: "myPassword")
        }
    }
}

repository(url: "scp://repos.mycompany.com/releases") {
    authentication(userName: "me", password: "myPassword")
}