Bocker

Docker implemented in 100 lines of bash.

Prerequisites

The following packages are needed to run bocker.

• util-linux 2.25.2
• btrfs-progs 3.16.2

Because RHEL/CentOS 7 does not ship a new enough version of util-linux you will need grab the sources from here and compile yourself.

Additionally /var/bocker needs to be on a btrfs filesystem.

For ease of use a Vagrantfile is included which will build the needed environment.

Example Usage

$ ./bocker init base-image/
img_e6b698c1-513d-4a40-807c-23b0fe54353a

$ ./bocker images
IMAGE_ID
img_e6b698c1-513d-4a40-807c-23b0fe54353a

$ ./bocker run img_e6b698c1-513d-4a40-807c-23b0fe54353a uname -sro
Linux 3.10.0-123.20.1.el7.x86_64 GNU/Linux

$ ./bocker ps
CONTAINER_ID					            COMMAND
ps_349bf646-06cf-4d98-bcf8-744f59e7e6bb		uname -sro

$ ./bocker rm ps_349bf646-06cf-4d98-bcf8-744f59e7e6bb
ps_349bf646-06cf-4d98-bcf8-744f59e7e6bb

$ ./bocker rm img_e6b698c1-513d-4a40-807c-23b0fe54353a
img_e6b698c1-513d-4a40-807c-23b0fe54353a

Currently Implemented

• docker build †
• docker images
• docker ps
• docker run
• docker rm / docker rmi

† bocker init provides a very limited implemetation of docker build

Not Yet Implemented

• Networking
• Port Forwarding
• Data Volumes
• Data Volume Containers
• docker commit