Advice needed – building local Docker image for niavasha/plex-mcp-server (not in CA)

Hi everyone,

I’m trying to install niavasha/plex-mcp-server so I can use it as an MCP server with Grok. It is not available in Community Applications and does not appear to have a pre-built image on Docker Hub (only the source code and a Dockerfile). I just want to confirm my plan because I could not find documentation or threads on this.

I’ve been getting advice from Grok on how to do this. The recommended approach is:

1. Use the terminal to clone the repo and build a local image once.

2. Then use the normal Unraid Docker GUI (“Add Container”) and point the Repository field at that local image name so I can manage ports, environment variables, etc. through the UI.

The first terminal commands Grok suggested are:

cd /mnt/user/appdata
git clone https://github.com/niavasha/plex-mcp-server.git
cd plex-mcp-server
docker build -t plex-mcp-server .

After the image is built, I would add a container in the GUI with:

• Repository: plex-mcp-server

• Port 3000

• Environment variables for PLEX_URL, PLEX_TOKEN, and PLEX_ENABLE_MUTATIVE_OPS=true

My questions:

• Is this the appropriate / recommended way to handle a project that only ships source + Dockerfile on Unraid?

• Are there any significant risks to running git clone + docker build like this (especially regarding the cache pool / docker.img)?

• Is there a better or more “Unraid-native” method I’m missing?

I recently had a cache pool issue and lost a cache disk a few days after (successfully) following this advice the first time (probably just a coincidence). I'm rebuilding my Docker apps and I’m being extra cautious and would appreciate confirmation from experienced users before I proceed.

Thanks in advance for any guidance.

Edited 6 hours ago6 hr by zero_koop