DevOps on Junian Dev

How to Create an Empty Orphan Git Branch

author@junian.dev (Junian Triajianto) — Fri, 06 Feb 2026 19:00:00 +0700

Have you ever wanted to create a new, separate Git branch that doesn’t have any starting point from an existing branch?

One common use case is from the early days of GitHub, when you needed to create a separate empty branch called gh-pages. This branch was orphaned, meaning it had no relationship to the master or main branch, and was used to publish documentation sites to GitHub Pages.

This approach makes sense because you don’t want to upload your application source code from the main branch to GitHub Pages—only the static assets such as HTML, CSS, JavaScript, and other resources required for a static site.

Rotate Video with FFmpeg

author@junian.dev (Junian Triajianto) — Sun, 01 Feb 2026 19:00:00 +0700

Sometimes after recording a video using my iPhone, I notice that the orientation is wrong. For example, when I intend to record a vertical video, the final result ends up being horizontal. This happens because the Camera app uses the accelerometer to detect the video orientation at the moment recording starts.

Of course, with the built-in Photos app, I can rotate the video easily. But what if I need to do this on another machine, such as a Raspberry Pi?

How to Deploy a Blazor WebAssembly Standalone App to GitHub Pages

author@junian.dev (Junian Triajianto) — Fri, 30 Jan 2026 19:00:00 +0700

If you have ever built a .NET Blazor WebAssembly app, you may have separated the frontend and backend. Since Blazor WASM is essentially just the frontend, you can deploy it to most static site hosting services, including GitHub Pages.

Let’s get straight to the point. Follow these steps to create, publish, and deploy your standalone Blazor WebAssembly app.

Install the latest .NET SDK.

Create a new Blazor WebAssembly standalone app project. Let’s name it BlazorApp.

Deploy a .NET 10 Blazor WebAssembly App to Cloudflare Pages

author@junian.dev (Junian Triajianto) — Wed, 28 Jan 2026 07:06:56 +0700

Blazor is a modern way to build web applications. Instead of relying on JavaScript, it allows you to use C#. That’s the dream! In this guide, you’ll learn how to create a web application using Blazor and deploy it online using Cloudflare Pages.

Enough introduction. Let’s get started!

Install .NET 10

Blazor works with C#. To start a Blazor project, you need to install the .NET SDK. Simply download it and follow the installation instructions from the official website.

GitHub Actions Bot Username and Email Address

author@junian.dev (Junian Triajianto) — Mon, 29 Sep 2025 06:09:12 +0700

When writing a GitHub workflow, you may want it to automatically commit changes.

To distinguish between commits made by humans and those made by bots, set the committer name and email address to the GitHub Actions Bot.

Here are the details:

Username: github-actions[bot]
Email: 41898282+github-actions[bot]@users.noreply.github.com

You can configure these details for git with:

git config --global user.name "github-actions[bot]"
git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"

Here is an example workflow step that commits and pushes changes if any files have been modified:

Automating Git Cleanup Across Multiple Directories with a Shell Script

author@junian.dev (Junian Triajianto) — Tue, 17 Dec 2024 15:42:26 +0700

Managing multiple Git repositories can be a tedious task. One task I often perform is ensuring each repository is clean and reset to its original state. Instead of manually navigating into each directory and running Git commands, I like to automate the process with a simple shell script.

Objective of the Script

This script automates two key tasks for all Git repositories in the current working directory:

git clean -fdx: Removes untracked files, directories, and ignored files.
git reset --hard HEAD: Resets the repository to the last commit, discarding all local changes.

The script loops through each directory, checks if it’s a Git repository, and then performs the cleanup operations.

Simple OpenVPN Server Set Up with Docker

author@junian.dev (Junian Triajianto) — Thu, 22 Aug 2019 11:02:53 +0700

When I was doing some works, there was a requirement to whitelist development machine by IP Address from the United States. Since I was located in one of South East Asia countries, obviously I didn’t have a connection with US IP Address. So it would be reasonable to buy a VPN service for this.

But why buy a VPN service if we could use the existing VPS and set up a VPN server on it?

Xamarin Mobile Apps Continuous Integration and Delivery with Jenkins and HockeyApp

author@junian.dev (Junian Triajianto) — Tue, 30 May 2017 09:38:00 +0000

Laziness is probably the middle name of every programmer, especially when it comes to doing repetitive (usually) boring stuff, again and again. One of them is building app from latest source code.

Traditionally, we commit our work, pull our colleague’s code, merge them, build the binary file, and send it to testers. Not sure how many times we do that stuff every day.

Luckily, there is always a solution for that kind of repetitive task, by using Continuous Integration (CI) and Continuous Delivery (CD).