Is there an example somewhere to access the s3-gateway from Golang? I'm currently trying lakefs with docker-compose and it always says "AccessDenied: Access Denied." In the compose logs:

level=warning msg="error verifying credentials for key" func=gateway.authenticateOperation file="build/gateway/handler.go:158" authenticator=sigv4 error=SignatureDoesNotMatch host="s3.local.lakefs.io:8000" key=AKIAJLV7QKQRA5HYFG6Q method=GET path="/api/v1/s3:/hello/master" request_id=a795d1db-4d25-4c4c-8d94-81ee88c492d9 service_name=s3_gateway