Explore Aron's tech journey, a full-stack developer with a passion for web development, devops, and system administration. Dive into insightful blog posts about his tricks and experiences.https://aronschueler.de/https://aronschueler.de/blog/2025/05/13/dev-diary-3/https://aronschueler.de/blog/2025/05/13/dev-diary-3/In this dev diary I talk about how I manage to automate a personal and direct approach to marketing on reddit.Tue, 13 May 2025 17:23:50 GMThttps://aronschueler.de/blog/2025/04/28/dev-diary-2/https://aronschueler.de/blog/2025/04/28/dev-diary-2/In this dev diary I talk about my struggles with Google Ads, the new Youtube video and the difference between landing pages and demos for marketing.Mon, 28 Apr 2025 13:42:54 GMThttps://aronschueler.de/blog/2025/04/26/dev-diary-1/https://aronschueler.de/blog/2025/04/26/dev-diary-1/In this dev diary I'll share what I was working on last week, what fixes I had to implement and whats next on my todo list.Sat, 26 Apr 2025 13:42:54 GMThttps://aronschueler.de/blog/2025/06/12/guerilla-marketing-at-conferences/https://aronschueler.de/blog/2025/06/12/guerilla-marketing-at-conferences/Simple, authentic ways I've learned to promote myself and my projects at tech conferences without being pushy or salesy.Thu, 12 Jun 2025 00:00:00 GMTbest-practiceshttps://aronschueler.de/blog/2025/09/11/vibecoding-building-web-apps-fast-with-ai/https://aronschueler.de/blog/2025/09/11/vibecoding-building-web-apps-fast-with-ai/Learn how to leverage AI coding assistants like Claude Code and Cursor to build web applications rapidly while maintaining quality and architectural control.Thu, 11 Sep 2025 00:00:00 GMTbest-practiceshttps://aronschueler.de/blog/2025/09/15/migrate-gitlab-ci-to-buildkit-with-aws-ecr/https://aronschueler.de/blog/2025/09/15/migrate-gitlab-ci-to-buildkit-with-aws-ecr/Step-by-step guide to migrating from deprecated Kaniko to BuildKit in GitLab CI pipelines. Includes complete AWS ECR authentication and push configuration with working examples.Mon, 15 Sep 2025 00:00:00 GMTtutorialshttps://aronschueler.de/blog/2025/10/30/fixing-postgres-18-docker-compose-startup/https://aronschueler.de/blog/2025/10/30/fixing-postgres-18-docker-compose-startup/Struggling with a PostgreSQL startup error after updating to version 18+ in Docker Compose? Learn why the PGDATA path changed and how to fix your volume mounts in seconds.Thu, 30 Oct 2025 00:00:00 GMTfixeshttps://aronschueler.de/blog/2025/09/09/how-to-vibecode-on-iphone/https://aronschueler.de/blog/2025/09/09/how-to-vibecode-on-iphone/How to create a complete development environment using just your iPhone, SSH, and cloud servicesTue, 09 Sep 2025 00:00:00 GMTtutorialshttps://aronschueler.de/blog/2024/06/18/using-husky-pre-commit-hooks-to-ensure-playwright-version-consistency/https://aronschueler.de/blog/2024/06/18/using-husky-pre-commit-hooks-to-ensure-playwright-version-consistency/A step-by-step guide to setting up a pre-commit hook to ensure Playwright versions match between package.json and .gitlab-ci.yml.Tue, 18 Jun 2024 00:00:00 GMTtutorialshttps://aronschueler.de/blog/2025/06/15/how-to-send-automated-welcome-emails-in-firebase-with-cloud-functions/https://aronschueler.de/blog/2025/06/15/how-to-send-automated-welcome-emails-in-firebase-with-cloud-functions/Learn how to automatically send beautiful welcome emails to new users using Firebase Cloud Functions, the Firestore Send Email extension, and custom HTML templates.Sun, 15 Jun 2025 00:00:00 GMTtutorialshttps://aronschueler.de/blog/2024/12/03/automatically-publishing-playwright-test-reports-gitlab-pages/https://aronschueler.de/blog/2024/12/03/automatically-publishing-playwright-test-reports-gitlab-pages/A step-by-step guide to configuring Playwright and GitLab CI/CD to automatically publish HTML test reports with clickable links.Tue, 03 Dec 2024 00:00:00 GMTtutorialshttps://aronschueler.de/blog/2025/03/17/implementing-stripe-subscriptions-with-firebase-cloud-functions-and-firestore/https://aronschueler.de/blog/2025/03/17/implementing-stripe-subscriptions-with-firebase-cloud-functions-and-firestore/In this blog post I will explain how to integrate Strip with Firebase Cloud Functions and Firestore, so your SaaS can process subscriptions easily.Mon, 17 Mar 2025 14:33:34 GMThttps://aronschueler.de/blog/2024/09/26/In-Source-testing-with-vite-and-vitest/https://aronschueler.de/blog/2024/09/26/In-Source-testing-with-vite-and-vitest/Learn how to write Vitest In-Source tests through automatic test discovery.Thu, 26 Sep 2024 00:00:00 GMTtutorialshttps://aronschueler.de/blog/2024/04/25/fix-no-exported-member-'reactcomponent'-when-importing-svg-in-react-and-vite/https://aronschueler.de/blog/2024/04/25/fix-no-exported-member-'reactcomponent'-when-importing-svg-in-react-and-vite/This blog post fixes error TS2614: Module '"*.svg"' has no exported member 'ReactComponent' by changing the way svgs are imported.Thu, 25 Apr 2024 09:00:01 GMThttps://aronschueler.de/blog/2024/11/06/setting-up-nginx-proxy-manager-for-docker-containers/https://aronschueler.de/blog/2024/11/06/setting-up-nginx-proxy-manager-for-docker-containers/A step-by-step guide to configuring a reverse proxy using NGINX Proxy Manager for Docker containers.Wed, 06 Nov 2024 00:00:00 GMTtutorialshttps://aronschueler.de/blog/2024/06/20/sentry-beforeSend-google-analytics-noise-filter/https://aronschueler.de/blog/2024/06/20/sentry-beforeSend-google-analytics-noise-filter/Learn how to use Sentry's `beforeSend` configuration to filter out non-actionable "Failed to fetch" errors caused by adblockers in your web applications.Thu, 20 Jun 2024 00:00:00 GMTtutorialshttps://aronschueler.de/blog/2024/01/31/create-astro-front-matter-with-templater-in-obsidian/https://aronschueler.de/blog/2024/01/31/create-astro-front-matter-with-templater-in-obsidian/In this blogpost I want to show how I create Astro front matter with Templater in Obsidian.Wed, 31 Jan 2024 09:55:15 GMThttps://aronschueler.de/blog/2024/01/13/securing-firebase-firestore-with-basic-security-rules/https://aronschueler.de/blog/2024/01/13/securing-firebase-firestore-with-basic-security-rules/A blog post on how to secure your Firebase Firestore with basic security rules. We will allow read access to public data and read+write access to user-specific data.Sat, 13 Jan 2024 15:37:39 GMTtutorialshttps://aronschueler.de/blog/2024/01/10/create-vitest-testcases-with-chatgpt/https://aronschueler.de/blog/2024/01/10/create-vitest-testcases-with-chatgpt/In this blogpost, I show how to create testcases for vitest with ChatGPT and achieve high coverage.Wed, 10 Jan 2024 16:33:05 GMTtutorialshttps://aronschueler.de/blog/2024/06/25/building-2fa-form-in-react-using-sms-verification/https://aronschueler.de/blog/2024/06/25/building-2fa-form-in-react-using-sms-verification/A step-by-step guide to building a Two-Factor Authentication (2FA) form in React using SMS for verification, highlighting the use of react-hook-form and the autoComplete="one-time-code" attribute.Tue, 25 Jun 2024 00:00:00 GMTtutorialshttps://aronschueler.de/blog/2024/02/23/global-error-handling-with-vue-query/https://aronschueler.de/blog/2024/02/23/global-error-handling-with-vue-query/This blog post describes how to handle errors with vue-query on a global level by using axios interceptors.Fri, 23 Feb 2024 09:32:52 GMThttps://aronschueler.de/blog/2021/09/16/adding-a-hp-printer-on-arch-linux/https://aronschueler.de/blog/2021/09/16/adding-a-hp-printer-on-arch-linux/Quick note on how to install a (HP) printer under Arch Linux.Thu, 16 Sep 2021 09:59:36 GMTTutorialshttps://aronschueler.de/blog/2025/10/21/configure-zed-editor-for-nuxt-linting-and-formatting/https://aronschueler.de/blog/2025/10/21/configure-zed-editor-for-nuxt-linting-and-formatting/Learn how to properly configure Zed editor for Nuxt.js development with the right ESLint and Prettier settings. This step-by-step guide helps you set up your .zed/settings.json for optimal Nuxt workflow.Tue, 21 Oct 2025 00:00:00 GMTtutorialshttps://aronschueler.de/blog/2021/09/28/monitor-websites-with-grafana-prometheus-blackbox-exporter/https://aronschueler.de/blog/2021/09/28/monitor-websites-with-grafana-prometheus-blackbox-exporter/This post will describe how to setup Grafana, Prometheus and the Blackbox exporter quick and easy, allowing you to monitor your websites.Tue, 28 Sep 2021 10:29:41 GMTTutorialshttps://aronschueler.de/blog/2021/10/04/run-your-own-vpn-with-openvpn/https://aronschueler.de/blog/2021/10/04/run-your-own-vpn-with-openvpn/In this post I lead you through the installation process of OpenVPN, so that you can easily run your own cheap and 100% private VPN.Mon, 04 Oct 2021 10:38:04 GMTTutorialshttps://aronschueler.de/blog/2021/12/10/fix-slow-zsh-startup-nvm/https://aronschueler.de/blog/2021/12/10/fix-slow-zsh-startup-nvm/portion of code to your .zshrc to enable autocompletion. This, in turn, slows the startup of your shell quite a lot. But we can easily fix this slow zsh startup! Instead of always loading your nvm autocompletion, we can command oh-my-zsh to just load nvm ressources on-demand, also known as lazy-loading. Fri, 10 Dec 2021 11:09:12 GMTfixeshttps://aronschueler.de/blog/2021/12/29/how-to-bluetooth-on-arch-linux/https://aronschueler.de/blog/2021/12/29/how-to-bluetooth-on-arch-linux/As some may struggle to get their bluetooth connections up and running under Arch Linux (and I have to google this each time I install as well) I decided to write a post on it. Hope you benefit from it!Wed, 29 Dec 2021 13:57:43 GMTTutorialshttps://aronschueler.de/blog/2021/10/21/arch-linux-cannot-find-shared-library-libffi-so-7/https://aronschueler.de/blog/2021/10/21/arch-linux-cannot-find-shared-library-libffi-so-7/A short post on how to fix the library error mentioned in the title. We fix this by downgrading libffi or installing libffi7 from the AUR.Thu, 21 Oct 2021 08:23:52 GMTArch Linuxfixeshttps://aronschueler.de/blog/2021/11/06/truenas-cloud-backup/https://aronschueler.de/blog/2021/11/06/truenas-cloud-backup/Backups with Time Machine, Nextcloud, iSCSI storage - all is stored on my TrueNAS VM. It's running in proxmox with raid controller passthrough. As my proxmox machine just crashed due to faulty ram / ECC errors two days ago, I thought that I might be better off with an offsite backup for all these important storage pools. Thats where I discovered TrueNAS' capability of running Cloud Sync Tasks, which periodically run a TrueNAS backup to cloud providers you choose. Sat, 06 Nov 2021 12:09:18 GMTTutorialshttps://aronschueler.de/blog/2022/01/27/pycharm-docker-compose-couldnt-refresh-skeletons/https://aronschueler.de/blog/2022/01/27/pycharm-docker-compose-couldnt-refresh-skeletons/A recent upgrade of docker-compose might cause a nasty error. In this post I explain what to do to restore your debugger and the big why.Thu, 27 Jan 2022 17:36:34 GMTfixeshttps://aronschueler.de/blog/2022/01/28/aur-error-one-or-more-pgp-signatures-could-not-be-verified/https://aronschueler.de/blog/2022/01/28/aur-error-one-or-more-pgp-signatures-could-not-be-verified/This post explains how to fix the PGP signature verification on AUR packages. If the key of a signed PKGBUILD is not present in your public key ring, you will otherwise see "ERROR: One or more PGP signatures could not be verified"Fri, 28 Jan 2022 11:42:40 GMTfixeshttps://aronschueler.de/blog/2022/02/14/router-reducer-must-be-mounted-under-router/https://aronschueler.de/blog/2022/02/14/router-reducer-must-be-mounted-under-router/A possible fix for the error Could not find router reducer in state tree, it must be mounted under "router" with connected-react-routerMon, 14 Feb 2022 12:12:23 GMTfixeshttps://aronschueler.de/blog/2022/04/11/serve-your-build-locally-with-nginx-through-docker/https://aronschueler.de/blog/2022/04/11/serve-your-build-locally-with-nginx-through-docker/Sometimes you might want to debug problems or behavior of your produdction build locally. To do so, you have to somehow serve it. This post explains how!Mon, 11 Apr 2022 09:19:02 GMTfixesfrontendhttps://aronschueler.de/blog/2022/03/31/tailwind-scss-resolve-url-loader-error-processing-css-invalid-mapping/https://aronschueler.de/blog/2022/03/31/tailwind-scss-resolve-url-loader-error-processing-css-invalid-mapping/This post describes how to fix a tailwind error, where using @apply directives would cause "resolve-url-loader: error processing CSS, invalid mapping" errors during your build.Thu, 31 Mar 2022 15:47:10 GMTFixes & TricksJavaScriptTypeScripthttps://aronschueler.de/blog/2022/12/14/optimizing-screenreader-accessibility-for-icon-only-buttons/https://aronschueler.de/blog/2022/12/14/optimizing-screenreader-accessibility-for-icon-only-buttons/In this post I show how you can easily make buttons which consist only of an svg more accessible.Wed, 14 Dec 2022 12:09:47 GMTtutorialshttps://aronschueler.de/blog/2022/01/30/arch-signature-is-unknown-trust/https://aronschueler.de/blog/2022/01/30/arch-signature-is-unknown-trust/In this post I explain how to fix an error about an error that is caused by a package, which was signed with a missing/untrusted public key.Sun, 30 Jan 2022 22:02:03 GMTArch Linuxfixeshttps://aronschueler.de/blog/2024/07/29/enabling-hot-module-replacement-hmr-in-vite-with-nginx-reverse-proxy/https://aronschueler.de/blog/2024/07/29/enabling-hot-module-replacement-hmr-in-vite-with-nginx-reverse-proxy/A step-by-step guide on setting up Hot Module Replacement (HMR) in Vite with an NGINX reverse proxy, including configuration tips and best practices.Mon, 29 Jul 2024 00:00:00 GMTtutorialshttps://aronschueler.de/blog/2023/04/01/using-cloudflare-workers-as-a-proxy-for-firebase-authentication/https://aronschueler.de/blog/2023/04/01/using-cloudflare-workers-as-a-proxy-for-firebase-authentication/This blog post will guide you through the process of setting up Cloudflare Workers as a proxy for Firebase authentication, allowing any user to authenticate with the `signInWithRedirect` function. Without this, cross-domain cookie settings will prevent Safari and other browsers from signing in.Sat, 01 Apr 2023 13:41:49 GMTjavascriptfirebasecloudflarehttps://aronschueler.de/blog/2022/12/14/mocking-intersectionobserver-in-jest/https://aronschueler.de/blog/2022/12/14/mocking-intersectionobserver-in-jest/This post describes how to mock IntersectionObserver, a layout helper which is not implemented when running tests with Jest + JSDOM.Wed, 14 Dec 2022 11:45:39 GMTtutorialshttps://aronschueler.de/blog/2022/12/16/generating-meaningful-issues-in-sentry-with-react-query-+-axios/https://aronschueler.de/blog/2022/12/16/generating-meaningful-issues-in-sentry-with-react-query-+-axios/This post shows how to enrich axios errors when using react-query and how to handle them on a global level.Fri, 16 Dec 2022 09:58:15 GMTtutorialshttps://aronschueler.de/blog/2021/12/29/too-many-redirects-when-using-wordpress-as-container/https://aronschueler.de/blog/2021/12/29/too-many-redirects-when-using-wordpress-as-container/WordPress in Docker can cause quite some headache. Especially the reverse proxy, which we need to pass through traffic from host to container. I struggled with a "Too Many Redirects" error, which can come from some different sources. Wed, 29 Dec 2021 23:55:13 GMTfixes