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I suggest update ubuntu version of Dockerfile as latest version.
Now Dockerfile of this project specify
FROM ubuntu:16.04
, that is not latest stable version.Current latest LTS of Ubuntu is 20.04
But it will soon be update 22.04 at next April, 2022.
I believe ubuntu version will automatically upgrade 22.04 if we specify
FROM ubuntu:latest
in Dockerfile.I've already checked this change works expectedly.
PS:
If you believe we should specify one of specific version of ubuntu for stability, Please close this pull request.