Docker Environment Setup

* Create DigitalOcean Account

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By clicking below.

* Create a Droplet

* Use the following Configuration for Droplet.

You have to open image and zoom

In case of ssh key generation

Click on New SSH Key as shown in above image.

And Run these commands in Local System.

$ ssh-keygen
$ cat /c/Users/<Your User>/.ssh/docker_rsa

* Droplet after Creating

In you Project, you will be able to see one droplet.
Where you will get the public IP of that droplet and we will access that using that.

* Login and update Droplet

$ ssh -i docker_rsa root@165.22.212.229
$ sudo apt-get update

After updating kernal, installing docker to the droplet.
Below is specific to Ubuntu

$ sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg \
    lsb-release
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

Then we need to install Docker.

$ echo \
"deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null 

$ sudo apt-get update && sudo apt-get install docker-ce docker-ce-cli containerd.io

Verify Docker

To Verify Docker is running.

$ systemctl status docker

Hurray!! you are inside your first Droplet....

Comments

[peter279k]

Some steps about installing docker are missed.

After running curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg command, it should run echo \
"deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null and sudo apt-get update && sudo apt-get install docker-ce docker-ce-cli containerd.io to complete Docker installation.

More details about above Docker installation is available on official Docker doc.

[Deepak Porwal]

Thanks @peter279k , Going to update this.

[peter279k]

Or you can also check my docker_installer.sh shell script to complete Docker installation on Ubuntu 18.04 conveniently :).

[Arjun Porwal]

Awesome In Depth Guide !

[Deepak Porwal]

Thanks :)