Firejail is a SUID sandbox program that reduces the risk of security breaches by restricting the running environment of untrusted applications using Linux namespaces, seccomp-bpf and Linux capabilities.

Running a Hubot in the Kubernetes cluster
The very first option to setup and run your own Hubot is Heroku. There is a whole section in Hubot’s documentation how to do it. This is a very easy and straightforward solution, yet it’s true as far as you are running just Hubot and you don’t have any other services to maintain.

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