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Setting up Open WebUI with Docker Desktop
When reading the official documentation for Open WebUI, you will find commands for setting up the environment with Docker.
Of course, you can install it using those commands, but at the end of last month, Sergei Shitikov, a Docker Captain, posted on the official Docker blog about a newly released extension that allows one-click environment setup for Open WebUI on Docker Desktop. I'll use that to set up the environment this time.
Environment
- Windows 11 Pro 25H2
- Docker Desktop 4.52.0
Steps
Open the Manage extensions screen

There is an Extensions tab on the left side of the Docker Desktop screen; click it and select Manage.
Search and install in the Browse tab

Select the Browse tab, search for open webui, and click the Install button.
Open the extension for initial setup

An Open WebUI menu has been added under Extensions in the left menu. Opening it will start the initial setup.

After the initial setup is complete, the Open WebUI service will start automatically.
Access via browser

You can access Open WebUI by navigating to localhost:8090 in your browser.
That's all.
Since other configuration items can basically be handled via the GUI, there isn't much else worth noting.
Also, with only Open WebUI installed, no LLM models are set up, so you will need to add models to Docker Desktop or integrate with external tools such as LM Studio.
I have summarized the method for integrating with LM Studio in the following article, so please check it out.
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