Docker on ayyzenn

Jenkins + Docker Pipeline from GitHub

Tue, 10 Feb 2026 00:00:00 +0000

What I Built

I wanted Jenkins to pull code from GitHub, build a Docker image, and run a container automatically. This post is the pipeline I put together for that.

Goal: From Manual to Automatic

Manually, we usually do this:

Clone a GitHub repository
Run docker build
Run docker run
Check the output

With Jenkins, all of this happens automatically when the pipeline runs.

You click Build Now (or trigger from GitHub), and Jenkins does the rest.

Ansible: Docker and Kubernetes Node Setup

Sat, 17 Jan 2026 00:00:00 +0000

Why This Post Exists

After writing my first real Ansible playbook, I realized something:

Installing software manually once is easy. Installing it correctly, repeatedly, and safely is not.

So I decided to automate something real and useful:

Install Docker Engine (official way)
Prepare an Ubuntu server to become a Kubernetes node
Do everything using Ansible
No SSH-ing into the server again and again

This post documents that journey.

Real Setup (Same as Before)

Nothing fancy. Just real machines.

Creating My First Docker Container

Wed, 27 Jul 2022 00:00:00 +0000

What I Did Here

After installing Docker, I wanted to run an actual Ubuntu container — not just hello-world. The steps inside this post are the same on Arch Linux and Ubuntu hosts. Only the Docker installation differs — see Docker on Arch Linux and Ubuntu for that part.

Arch Linux (host)

Make sure Docker is installed and running on your Arch machine first:

sudo pacman -S docker
sudo systemctl enable --now docker
systemctl status docker

Pull the Ubuntu image

sudo docker pull ubuntu

Create and enter a container

sudo docker run --name my-container -it ubuntu

What those flags mean:

Docker on Arch Linux and Ubuntu: How I Got It Running

Tue, 26 Jul 2022 00:00:00 +0000

Why I Started Using Docker

I wanted a way to run apps without messing up my main system. Docker packs an app with everything it needs into a container — a small, isolated environment that shares my kernel but stays separate from everything else.

If something breaks inside a container, I delete it and start over. No reinstalling the whole OS.

Containers vs Images (Quick Version)

Image — a read-only template (like a recipe)
Container — a running instance of that image (like the actual dish you cooked)

You build or pull an image once. You can spin up as many containers from it as you want.