We ran into the following error when creating Docker-based GitHub Actions: the “standard_init_linux.go:211: exec user process caused „no such file or directory“” Everything worked locally and the Dockerfile looked good as well. Yet, when pushing the code to the build server (in this case GitHub), building …

Using GitHub Actions are a good use-case for testing purposes. You can conveniently provision testing dependencies like databases using the Docker-based architecture. You may also test your application against a combination of versions, a so called testing matrix. This tutorial outlines the steps to test your application against all combinations …

Generating random IDs or strings in Node.js or JavaScript is useful in various situations. For example, when generating an application or encryption key you want to create random strings with a minimal chance of duplication or collision. This tutorial shows you two ways to create a random string with …

GitHub Actions is a new product in the GitHub family. GitHub Actions offers a configuration-centric approach to run tasks, like a CI/CD pipeline, on defined events like tagging a new release. GitHub Actions open a whole new world for developers to automate tasks. The product is built on Docker …

String replacements in JavaScript are a common task. It still can be tricky to replace all appearances using the string.replace() function. Removing all whitespace can be cumbersome when it comes to tabs and line breaks. Luckily, JavaScript’s string.replace() method supports regular expressions. This tutorial shows you how …

Ubuntu/Debian — How to Unzip Into a Folder You may download a ZIP file from the Internet and need to unzip it to a specific directory. On Unix and Linux, you can stay in the command line and unzip a packaged ZIP file to the folder of your choice! {{outline} …

Cron jobs are a nice way to automatically run scheduled tasks. The cron service in Linux systems is the typical approach when scheduling commands on the operating system. {{outline}} Testing a Cron Job Recently the certbot from Let’s Encrypt didn’t automatically renew SSL certificates anymore. We used a …

JavaScript has built-in methods to generate a single, random number. You can leverage this feature to create your own method generating a random number in a range between two other numbers. {{outline}} Random Integer Between X and Y (Exclusive Y) Let’s say you want to generate an integer in …