Docker implemented in around 100 lines of bash
Prerequisites
The following packages are needed to run bocker.
- btrfs-progs
- curl
- iproute2
- iptables
- libcgroup-tools
- util-linux >= 2.25.2
- coreutils >= 7.5
Because most distributions do not ship a new enough version of util-linux you will probably need to grab the sources from here and compile it yourself.
Additionally your system will need to be configured with the following:
- A btrfs filesystem mounted under
/var/bocker
- A network bridge called
bridge0
and an IP of 10.0.0.1/24 - IP forwarding enabled in
/proc/sys/net/ipv4/ip_forward
- A firewall routing traffic from
bridge0
to a physical interface.
For ease of use a Vagrantfile is included which will build the needed environment.
Even if you meet the above prerequisites you probably still want to run bocker in a virtual machine. Bocker runs as root and among other things needs to make changes to your network interfaces, routing table, and firewall rules. I can make no guarantees that it won’t trash your system.
Example Usage
$ bocker pull centos 7