Jenkins groovy function. Loads into Jenkins env from lines "key=value" in `text` https://sorokin.engineer/posts/en/jenkins_load_env_vars_with_expanding.html

loadVarsFromText.groovy

private void loadVarsFromText(String text) {
    text.split('\n').each { envLine ->
        def (key, value) = envLine.tokenize('=')
        env."${key}" = "${value}"
    }
}