Build a minimal environment with Buildroot, enough for running Docker with containerd.
Like an "updated" version of the deprecated boot2docker, running entirelly from memory.
Written by Anders Björklund (@afbjorklund)
Kernel
- namespaces
- cgroups
- overlayfs
- nat
- bridge
- conntrack
- vxlan
User
- docker
- containerd (required by dockerd)
- bash
- iptables
Bootable image:
72M output/buildroot.iso
Device layout:
| QEMU | File | Media | Device | Used for | Size |
|---|---|---|---|---|---|
| -hda | disk.img | disk | /dev/sda | Persistent /var |
20g |
| -hdc | buildroot.iso | cdrom | Buildroot booting | 72m |
Reference board:
qemu/x86_64
4.9M output/images/bzImage
84M output/images/rootfs.ext2