Load all .env files in the project's root directory on project property

load-env-files.gradle

task loadEnv(dependsOn: ":app:build") {
    file(rootProject.projectDir).listFiles({
        it.isFile() && it.name.endsWith(".env")
    } as FileFilter).each { file ->
        file.withInputStream { inputStream ->
            def properties = new Properties()
            properties.load(inputStream)
            properties.stringPropertyNames().forEach { name ->
                ext.setProperty(name, properties.getProperty(name))
            }
        }
    }
}