Uncategorized Archives — Wild Wild Wolf

Speeding up Docker Builds With eatmydata

Quite often, one of the most time-taking parts of the build process is the installation of dependencies. This process is traditionally slow because package managers choose stability over performance. And this perfectly makes sense: if something terrible happens, the system must remain in a usable state.

However, stability is not very important when building an image: if the build fails, the system discards the image, and you have to start over.

This post provides some tips on how to use eatmydata to speed up some operations by the example of Debian-based images.

How to Make Lando Work with Ubuntu 20.04

Lando is a local development environment and DevOps tool built on Docker container technology, aimed at providing an easy way for developers to specify requirements for their projects. It provides installation packages for various operating systems, including Ubuntu. However, if you are not using the official Docker distribution, Lando will likely fail to install.

In this article, we describe two workarounds on how to install Lando on Ubuntu.

Multi-stage Docker Builds and Extended File Attributes

Multi-stage builds are a great way to keep the size of the resulting image down. They are extremely useful if you want to use scratch-based images for your application. However, unless you are using Buildx or BuildKit, there is a limitation regarding copying extended file attributes across stages. In this post, we discuss several workarounds to this issue.

Quote of the Day

I’m only aware of using lodash when it has yet another security vulnerability

IE 11 and cssnano

This post explains how to configure cssnano when you have to support IE 11, and your CSS contains hacks targeted at it.

TypeScript, preact, and unistore

When I tried to use unistore instead of redux in one of my pet projects, I discovered that its TypeScript typings are not very accurate. In this post I try to come up with better typings for unistore’s connect() function.

preact-cli 3 and sass-loader 8

When using sass-loader 8.0.0 with preact-cli 3.0.0-next.19, preact build fails with an error: Invalid options object. Sass Loader has been initialised using an options object that does not match the API schema. options has an unknown property ‘includePaths’. Quick fix: use sass-loader 7.3.1.

Store FormData object in localStorage

This post describes how to serialize a FormData object to JSON and how to fill the form back with the serialized data.

How to Enable Two Factor Authentication with pam-u2f

We live in a world where data is an incredibly valuable currency, and you are always at risk of loss. Because of this, you must do everything you can to ensure what you hold on your desktops and servers is safe. If you are looking to lock down your Linux servers and desktops as tight as possible, you should consider to make use of two-factor authentication. This article explains how to configure two factor authentication using pam_u2f.

CORS Proxy by Means of nginx

A CORS proxy is a service that allows sites to access resources from other websites, without having to own that website in case when no Access-Control-Allow-Origin header is present on the requested resource. This article shows how to create one with the help of nginx and without writing a single line of code.

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