local_reader.gradle

ext["signing.keyId"] = ''
ext["signing.password"] = ''
ext["signing.secretKeyRingFile"] = ''
ext["ossrhUsername"] = ''
ext["ossrhPassword"] = ''

File secretPropsFile = project.rootProject.file('local.properties')
if (secretPropsFile.exists()) {
    println "Found secret props file, loading props"
    Properties p = new Properties()
    p.load(new FileInputStream(secretPropsFile))
    p.each { name, value ->
        ext[name] = value
    }
} else {
    println "No props file, loading env vars"
}