Xibo CMS on macOS, xibo-docker-201_cms-web_1 ... error

HELP!!

I am trying to install xibo CMS on a Mac to provide content to screens that have Pi 3 B+ plugged into them. I see step by step guides for windows, but that doesn’t really help me much.

Somewhat out of my depth on this one with practically 0 experience. I’ve successfully installed docker & followed a youtube guide here to get as far as:

$ docker-compose up -d

then this:

Creating xibo-docker-201_cms-xmr_1 … done
Creating xibo-docker-201_cms-db_1 … done
Creating xibo-docker-201_cms-web_1 … error

ERROR: for xibo-docker-201_cms-web_1 Cannot start service cms-web: driver failed programming external connectivity on endpoint xibo-docker-201_cms-web_1 (9f357e446a6e6a9669f5f17a82e27cdfe65d1fb271c0a7d318570f6d021cfe66): Error starting userland proxy: Bind for 0.0.0.0:80: unexpected error (Failure EADDRINUSE)

ERROR: for cms-web Cannot start service cms-web: driver failed programming external connectivity on endpoint xibo-docker-201_cms-web_1 (9f357e446a6e6a9669f5f17a82e27cdfe65d1fb271c0a7d318570f6d021cfe66): Error starting userland proxy: Bind for 0.0.0.0:80: unexpected error (Failure EADDRINUSE)
ERROR: Encountered errors while bringing up the project.

Any help is greatly appreciated.

You already have a web server running on port 80. You’ll need to have Xibo use a different port, or shut your existing webserver down first.