build.gradle

repositories {
    ...
    maven {
        name = "<GitHub package name>"
        url = uri("https://maven.pkg.github.com/<Org name/username>/<repo_name>")
        credentials {
            username =
                System.getenv("git_user") ?: githubProperties.getProperty("github.username")
            password =
                System.getenv("git_token") ?: githubProperties.getProperty("github.token")
        }
    }
}