More info in: https://stackoverflow.com/questions/79250487/is-there-any-way-to-build-an-sftpsupplier-splitter-batch-producer-with-spring * Address PR reviews: * Fix typos and language in README * Fix new line in the end of `application.yml` * Move `@Bean` for `RabbitMQContainer` as a regular `static` property on the class with a `@Container` * Use `@Testcontainers(disabledWithoutDocker = true)` * Move `@RabbitListener` method directly to test class * In the end we don't need extra `@TestConfiguration` class at all