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The difference between a container and a virtual machine is that the underlying hosts’ kernel is shared with containers whereas in virtual machines each machine has its own kernel.

This post will show you how to significantly lessen this burden by using docker.Ī Docker container can also be used as a logical separator similar to a virtual machine. Kali, which is used by testing teams to validate security controls can be a heavy system burden as a VM. Sudo apt-get install lsb-release Docker repository configurationĪfter the prerequisites are met, you must download the Docker’s GNU Privacy Guard key, and then update Ubuntu’s references to the Docker software repository.In this post, my aim is to demystify docker for container beginners and explore one practical use of Docker microservices via the use of Kali within a dockerized container on your local desktop/laptop.

The lsb-release command to identify the Linux distribution currently being used.

GnuPG – a free implementation of OpenPGP to work with the Docker GPG key.

CURL – the utility which is used to download the Docker GPG key.

The first set of Docker install commands simply configures your Ubuntu instance with the required prerequisites:

Validate the Docker and docker compose setup.Install Docker along with containerd and the docker compose plugin.Configure the Docker software repository.

Here are the basic steps you need to follow to install Docker and docker compose on Ubuntu: Let’s break down these Docker and docker compose install command for Ubuntu into more detail. Sudo apt-get update # Install docker and docker compose on Ubuntu sudo apt-get install docker-ce docker-ce-cli containerd.io docker-compose-plugin # Verify the Docker and docker compose install on Ubuntu sudo docker run hello-worldĭocker and compose install steps on Ubuntu # Download the docker gpg file to Ubuntu sudo mkdir -p /etc/apt/keyringsĬurl -fsSL | sudo gpg -dearmor -o /etc/apt/keyrings/docker.gpg # Add Docker and docker compose support to the Ubuntu's packages list echo "deb apt-get install docker-ce docker-ce-cli containerd.io docker-compose-pluginsudo apt-get install docker-ce docker-ce-cli containerd.io docker-compose-pluginlinux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt//docker.list > /dev/null To install Docker and docker compose on Ubuntu, issue the following commands in a terminal window: # Docker and docker compose prerequisites sudo apt-get install curl