Q2

Simple Docker

This is the implementation of a simple version of docker with Go. This code extends container-from-scratch code which you can create multiple containers at the same time. In this code every container has it's own ubuntu20:04 filesystem in a separate folder in root the uid of container is a random number.

How to Run

Ubuntu Filesystem

First we need a ubuntu filesystem: You can download the filesystem from my drive or the following instruction.

docker pull ubuntu:20.04

This command will pull the ubuntu:20.04 image from docker hub.

docker run ubuntu

docker ps
CONTAINER ID   IMAGE          COMMAND      CREATED          STATUS                      PORTS       NAMES
a25060975c97   ubuntu:20.04   "bash"       59 seconds ago   Exited (0) 58 seconds ago               inspiring_albattani

Now we export the filesystem of the ubuntu with the following command:

docker export -o ubuntu.tar a25060975c97

Run container

and then place it in the Q2 directory.the for run the container use following command:

sudo go run container.go run <hostname> <memory>

replace hostname and memory (MB) with the desired values.