Docker is an open-source project that automates the deployment of applications inside software containers. And Univention Corporate Server 4.0-2 is officially supporting docker integration.
This is mini how-to install Docker in UCS 4.0-2
type and run this command in terminal:
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univention-install docker.io
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Just for checking after you install it, type in the terminal:
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~# docker -v
Docker version 1.3.2, build 39fa2fa
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Congratulations!