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I saw that it's possible to convert a Docker image into a Vagrant box.
Is there a way to convert a Vagrant box into a Docker image?
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One big difference between Docker and Vagrant is that Docker containers run on Linux, but Vagrant files can contain any operating system. That said, Docker does work with non-Linux operating systems. It just needs to run within a Linux virtual machine.
Vagrant comes with support out of the box for using Docker as a provider. This allows for your development environments to be backed by Docker containers rather than virtual machines. Additionally, it provides for a good workflow for developing Dockerfiles.
I replayed this with EC2 boxes and Virtualbox boxes in my Github project blacklabelops/centos. I have prepared a Vagrantfile with the necessary installation and you can try it yourself with your Vagrant boxes.
EC2 boxes:
Create and provision an AMI image with https://github.com/katzj/ami-creator - Skripts in my repository.
Afterwards use Guestfish in order to extract the image into a tarball. - Skripts in my repository.
Import the tarball inside Docker. - Example in my repository.
And now with Vagrant Virtualbox, commands can be replayed with my provided Vagrantfile. Just clone the repository, spin it up and type:
$ qemu-img convert -f vmdk -O raw MyTry-disk1.vmdk mytry.img The Vagrant box's VMDK can be found in the Virtualbox folder, usually ~/VirtualBox\ VMs/.
After the raw has been created you can apply Guestfish.
$ guestfish -a mytry.img --ro $ ><fs> run Note: tty
$ ><fs> list-filesystems /dev/sda1: ext4 /dev/VolGroup/lv_root: ext4 /dev/VolGroup/lv_swap: swap $ ><fs> mount /dev/VolGroup/lv_root / $ ><fs> tar-out / - | xz --best >> mytry.xz $ ><fs> exit Note: exiting tty
Importing into docker:
$ cat mytry.xz | docker import - mytryimage Look inside the container
$ docker run -it mytryimage bash If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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