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Base images and provisioner for building full fat init system enabled containers

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Reefer

Why let your apps spoil during run-time, in nasty standard containers, when you can have a reefer container?

Notes:

  • Avoid using Docker for Mac or Docker for Windows, it's an aproximation of a real linux box not a linux box

  • If you want to build on mac or windows, use Docker Toolbox

  • You can build the images with vanilla docker, if you want to run the provisoner object you need packer and ansible installed

  • If your using Docker Toolbox's Boot2Docker image, you have to login to the docker-machine box and remount cgroups and add a folder, on a standard linux box you don't have to do anything and I am working on a pacth to submit. Here are the commands: docker-machine start default docker-machine ssh sudo -i mount -o remount,rw /sys/fs/cgroup mkdir -p /sys/fs/cgroup/systemd exit exit eval $(docker-machine env default)

  • When you want to run your systemd image you can use this template: docker run -itd --stop-signal=RTMIN+3 --cap-add SYS_ADMIN --tmpfs /run --tmpfs /run/lock -v /sys/fs/cgroup:/sys/fs/cgroup:ro gialia/centos:latest /sbin/init

  • If you dont want to do the --cap-add, you can make a folder under the root hierarchy and mount it as a remount of /sys/fs/cgroup in read only mode (ro).

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Base images and provisioner for building full fat init system enabled containers

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