How to release

Use username/password of sonatype https://s01.oss.sonatype.org/

MAVEN_USERNAME={} MAVEN_PASSWORD={} ./gradlew build publish

Generate gpg key

Generate gpg key with name and email

 gpg --gen-key

Export keyring

 gpg --keyring secring.gpg --export-secret-keys > ~/.gnupg/secring.gpg

Gradle properties should looks something like

$ cat ~/.gradle/gradle.properties

signing.keyId=5DBFACD8
signing.password={passphrase}
signing.secretKeyRingFile=//Users/jsalinas/.gnupg/secring.gpg