Christian Nicolai 920d82f073 docker: allow successful compiling of nio4r gem dependency ...

- now seems to need linux-headers, see https://github.com/socketry/nio4r/issues/225

2021-02-18 11:25:05 +01:00

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Dockerfile

docker: allow successful compiling of nio4r gem dependency

2021-02-18 11:25:05 +01:00