Minio is nice but is AGPL licensed, which is a no-go for any commercial project. If you still want to use S3-compatible API and store files SeaweedFS is your savior.

Setup:

• Make sure to add port 8333 as a binding to your HTTP networking for it to work.

Taken from official docker image: https://hub.docker.com/r/chrislusf/seaweedfs

More reference links: https://github.com/seaweedfs/seaweedfs/wiki/Amazon-S3-API