floci-io/floci ? reverse-engineered prompt

Build me a local AWS emulator that I can use for development and testing. I want something that's a free and open-source alternative to LocalStack, but lighter, faster, and without any required auth tokens or feature restrictions.

The goal is to have a single Docker container that I can launch with docker-compose up. It should expose all the emulated AWS services on a single port, like localhost:4566. This way, I can use the standard AWS SDKs and CLI tools just by pointing them to my local machine.

It needs to support a wide range of common services—definitely things like S3, SQS, DynamoDB, and Lambda. But it would be great if it could also handle more advanced services like ECS, EC2, IAM, RDS, and API Gateway. The main thing is that it should let me test my AWS-dependent applications locally without needing a real AWS account.