Error on connection to opensearch instance with indigo

[MysterionRise]

Summary

I visited https://github.com/epam/Indigo/blob/master/bingo/bingo-elastic/java/src/test/java/com/epam/indigo/BaseLocalOpensearchTest.java，I copied your code and try the connection with an opensearch docker instance which runs on schema http and port is 9200.
The command to run docker: docker run --name opensearch2 -p 9200:9200 -e 'discovery.type=single-node' -e 'DISABLE_SECURITY_PLUGIN=true' opensearchproject/opensearch:2.8.0

However, I got error: “Elasticsearch isn't started at http://[localhost]:9200 org.elasticsearch.ElasticsearchException: Elasticsearch version 6 or more is required”

Could you please give me any hint on how I can resolve this issue?

P.S. Reported as reported via email