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Jest-dynamodb tests - ECONNREFUSED 127.0.0.1:8000

I am trying to run this jest dependency within a docker container, it should build locally running instance of dynamodb and then run tests against it.
After I run yarn test command it takes some time and outputs:

Error: connect ECONNREFUSED 127.0.0.1:8000
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1117:14)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

I tried monitoring what happens with lsof and ps aux, and it seems that dynamo instance is running for some time and then before the tests start it gets shutdown.
It all works perfectly fine on my local machine.

I honestly run out of ideas about what to do about it, has anyone had a similar problem?