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Systemd can be used in a docker container only when lot of system services are masked. See my old CentOS 6 with systemd in docker container project as example: https://github.com/vlisivka/docker-centos7-systemd-unpriv
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> It has no init system.
Apologies that I can't link directly to the "--init" flag but docker actually does have an init, it's just (err, was?) compiled into the binary: https://docs.docker.com/engine/reference/commandline/run/#op...
My recollection is that it either adopted, or inspired, https://github.com/Yelp/dumb-init#readme which folks used to put into their Dockerfile as the init system back in the day
Folks (ahem, I'm looking at you, eks-anywhere[0]) who bundle systemd into a docker container are gravely misguided, and the ones which do so for the ability to launch sshd alongside the actual container's main process are truly, truly lost
0: https://github.com/aws/eks-anywhere/issues/838#issuecomment-...
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> It has no init system.
Apologies that I can't link directly to the "--init" flag but docker actually does have an init, it's just (err, was?) compiled into the binary: https://docs.docker.com/engine/reference/commandline/run/#op...
My recollection is that it either adopted, or inspired, https://github.com/Yelp/dumb-init#readme which folks used to put into their Dockerfile as the init system back in the day
Folks (ahem, I'm looking at you, eks-anywhere[0]) who bundle systemd into a docker container are gravely misguided, and the ones which do so for the ability to launch sshd alongside the actual container's main process are truly, truly lost
0: https://github.com/aws/eks-anywhere/issues/838#issuecomment-...
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I recently switched to multirun [1] which in my case is superior to supervisor. I don't have to create any config files anymore, and it behaves exactly as i want it to: If one on the processes dies the complete container will die and docker's restart-policy takes place.
