install docker on linux mint 21

21 machine? Let’s break it down, step by step, and make this whole thing super easy.

First things first, let’s make sure our system is up to date:

Open your terminal (you know, that black window that looks a little intimidating but is actually pretty cool) and type in these commands:

bash

sudo apt-get update

sudo apt-get upgrade

These commands will update your package lists and install any available upgrades, so we’re all set for the Docker installation.

Now, let’s add the Docker repository:

We need to tell our system where to find the Docker packages, so we’ll add the official Docker repository. Here’s how you do it:

bash

sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-keys 0EBFCD88

sudo add-apt-repository “deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable”

Don’t worry if you’re not familiar with all these commands. Just copy and paste them into your terminal.

The next step is installing Docker Engine itself:

Use this command:

bash

sudo apt-get install docker-ce docker-ce-cli containerd.io

This will install Docker Engine, the command-line interface (CLI), and containerd, which is the runtime for containers.

To verify everything’s in place, try these commands:

bash

sudo systemctl status docker

sudo docker version

If you see output similar to this:

● docker.service – Docker Application Container Engine

Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)

Active: active (running) since Fri 2023-09-29 15:39:04 EDT; 2min 25s ago

Main PID: 1100 (dockerd)

CGroup: /system.slice/docker.service

└─1100 /usr/bin/dockerd -H fd:// –containerd=/run/containerd/containerd.sock

Sep 29 15:39:04 mint-21 systemd[1]: Started Docker Application Container Engine.

And this:

Client: Docker Engine – Community

Server: Docker Engine – Community

Engine:

Version: 20.10.14

API version: 1.41

Go version: go1.17.15

Git commit: 4810429

Built: Thu Aug 18 18:28:48 2022

OS/Arch: linux/amd64

Experimental: false

Then you’re good to go!

Let’s make things easier with Docker Compose:

Docker Compose lets you manage multiple containers as a single unit, making your workflow much smoother. Here’s how to install it:

bash

sudo apt-get install docker-compose

And just like before, check if it’s installed correctly:

bash

docker-compose –version

You’ll see something like this:

docker-compose version 2.10.2, build 6039574

Now, to make Docker work seamlessly, we need to add your user to the docker group:

bash

sudo usermod -aG docker $USER

Finally, restart your system:

This step ensures everything is properly set up and ready to roll.

That’s it! Now, you’re all set to start using Docker on your Linux Mint 21 machine.

Here’s a quick summary of what we did:

Now, let’s explore what you can do with Docker:

1. Run a simple container: docker run hello-world

2. Build your own container: docker build -t my-app .

3. Run a web server in a container: docker run -d -p 80:80 nginx

Remember, Docker is a powerful tool, and there’s a whole world of possibilities to explore. Feel free to experiment, share your findings, and don’t hesitate to ask if you have any questions!