Docker Installation on Linux (Ubuntu)

Installation of Docker Desktop

• Open Docker Docs on browser.

  

• Now click on the Download .deb button.

  

Installation of Docker Engine

• First we will remove all the remove all the conflicting and broken packages if previously present.

for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do sudo apt-get remove $pkg; done

• Now we will install the docker dependencies.

sudo apt update

First we will add the Docker GPG key.

• This command install the essential packages for the docker installation.

sudo apt-get install ca-certificates curl gnupg

• This command creates the directory /etc/apt/keyrings with the permissions 0755 using the install command with superuser privileges.

sudo install -m 0755 -d /etc/apt/keyrings

• This command downloads a security key for Docker, converts it to a usable format, and saves it in a specific directory for package management on a Linux system.

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg

• This command gives the permission to access the key.

sudo chmod a+r /etc/apt/keyrings/docker.gpg

• This command adds the Docker repository to the system’s apt sources.

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

• After this do the apt update to update the package list.

sudo apt-get update

---

Installation of Docker Desktop

• Now locate the docker desktop package (.deb) and install it.

sudo apt install ./docker-desktop-4.26.1-amd64.deb

Docker sign in (for Docker Hub as well as Docker Desktop)

• Note: This sign-in is not directly possible as we need to generate a token from the docker hub and then use that token to sign in to the docker desktop.

• This is very important as its required to pull the images from the docker hub and also to push the images to the docker hub.

• This command will generate the gpg key.

gpg --generate-key

• Now pass the Name , Email and Passphrase.

  

• Now we will pass the public generated key from the previous command.

pass init <your_generated_gpg-id_public_key>

• Now go to the Docker Desktop and do the sign in.

  

---

Thus we have successfully installed the docker desktop on our system.