[Photo by Antony Trivet](https://www.pexels.com/photo/herd-of-blue-wildebeest-walking-in-savanna-6053000/)

How I stopped worrying and loved the GNU Make and Makefiles

First contact with make When I was invited for my first job interview in the IT, I’ve been asked such question: How would you typically build a program from sources, what commands will you use? I answered: It’s obvious: ./configure make make install Those times belong to the past now and not many programmers use GNU Make1 nowadays. Try asking this question and you will see disgust at best. For many it’s the fist contact with make and often the last one, but not for me 😉...

2024-02-16 · 9 min · timor
[xkcd.com](https://xkcd.com/349/)

Keeping Docker afloat - Best practices for patching and deprecating images

Intro One of the biggest benefits of Docker images is their immutability. Once they’re built, they don’t change. Built once, would work forever… That’s how nightmares of security guys starts 🤣 We have then two contradictory concepts: flowchart LR id1(Keep it stable) <---> id2(Keep is up to date and secure) For day to day work, usually first concept wins. You want your builds stable and try to avoid tempting distractions of upgrading log4j to latest version… Who knows what might break....

2024-02-09 · 7 min · timor
[pre-commit](https://pre-commit.com)

My pre-commit config for Hugo blog

I love blogging with Hugo and I have two blogs already that use it. The good thing about static sites is that you have all the data in the files. You can optimize them locally, batch process, amend, etc. Powerful templating engine allows to quickly pre fill documents in the format I like. I have some steps in the Makefile for things like image optimization, but I often don’t remember to run them 😃...

2024-01-29 · 2 min · timor

Tuning PipeWire for best audio quality on Ubuntu

TL;DR If you’re not interested in the “story of my life”, go directly to “Tuning PipeWire” section. I’m not an audiophile, but I spent whole days in the headphones and I like when sound sounds good. I like slight bass boost, which adds this kick to the melody, but won’t overwhelm me after an hour of listening. I like when high tones are clear, but I get annoyed if they’re too strong....

2024-01-28 · 8 min · timor
[Generated by AI](https://www.bing.com/images/create/potrzebujc499-obrazek-dla-posta-na-blogu-o-temacie3a-g/1-65b520c6d817444ea0a5f4ed3dd8843a?id=QFgGAr6fEgEMEJSm0T45XQ%3d%3d&view=detailv2&idpp=genimg&FORM=GCRIDP&mode=overlay)

Git hacks - a set of my favorite git aliases

I use Git a lot, even writing this article i will commit text few times. There’s a set of aliases I rely on daily and they’re first I add in new place. Some Git commands are unnecessarily verbose. You can make your life much easier with bash-completions, but if you write it tens of times per day, it’s anyway a lot of typing… and I’m a lazy man 😄 Simple status/log checks git s s = status --short --branch --untracked-files Shows a short, branch-focused status with untracked files....

2024-01-27 · 6 min · timor
[Photo by Ann H](https://www.pexels.com/photo/blue-tape-measure-on-yellow-surface-10894941/)

Checking compressed size of Docker image

One day, I was looking for some gains to improve the startup time for Jenkins agents. We run them as containers and because images are quite big, I was thinking about cutting the size, by cutting less frequently used features. I was looking for the metrics I could use to decide which changes are most valuable. I could think about two: download time and startup time. Together they combine to the gap between the request to start agent and the moment you can start to use it....

2024-01-24 · 2 min · timor
[Photo by RealToughCandy.com](https://www.pexels.com/photo/person-holding-a-small-paper-11035539/)

Use Github with SSH on port 443

Today, I was trying to pull/push repos from Github and I was getting timeout errors. I use SSH for clonning and I prefer it this way over HTTPS. I was looking for the reason but it felt like a temporary glitch, either on Github’s or my provider’s side. I was googling for anything, that could help me and I found1 the way to use Github ssh clone/push/pull via SSH (as I want), but via port 443… Simulating HTTPS traffic… OK…...

2023-12-26 · 1 min · timor
[Photo by RealToughCandy.com from Pexels](https://www.pexels.com/photo/a-person-holing-a-sticker-in-close-up-photography-11035380/)

The best way to get NVM working in CI/CD systems

TL;DR While reasoning is important, readers may not be interested in all the frustrations I experienced while figuring out how to get things done. If you’re looking for a quick solution, skip to the “What eventually worked?” section. However, if you’re interested in the thought process behind the solution, keep reading. Why? Some might bother why the hell I’d like to make my life so hard? 🤣 We used to use nodeenv for that purpose....

2023-04-25 · 10 min · timor

Ubuntu - Key is stored in legacy trusted.gpg keyring...

Since upgrade to Ubuntu 22.04 keep seeing those warnings: W: http://ppa.launchpad.net/yubico/stable/ubuntu/dists/jammy/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details. W: https://updates.signal.org/desktop/apt/dists/xenial/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details. W: https://repo.skype.com/deb/dists/stable/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details. W: https://packagecloud.io/AtomEditor/atom/any/dists/any/InRelease: Key is stored in legacy trusted....

2022-10-21 · 3 min · timor
Devoxx 2022

Back on the big stage!

I’m back on the big stage! I haven’t attend any big conferences as presenter for some time, but this year will change it. I’m starting big, with a talk: Docker base images - Ideas how to manage them on scale on Devoxx conference in Kraków, that will take place on 22-24th June 2022. Want to meet? Meet there 😄 Update I uploaded slides from presentation to my Github account. There’s also a video available:

2022-06-13 · 1 min · timor