omp-server fails to start when running with docker: libatomic.so.1 missing

[vincenzocorso]

I'm trying to build and run the server using Docker:

git clone --recursive https://github.com/openmultiplayer/open.mp
cd open.mp/docker
./build.sh
./run.sh

The build completes successfully, but the server fails to start with:

/opt/open.mp/omp-server: error while loading shared libraries: libatomic.so.1: cannot open shared object file: No such file or directory

Setup:

• Host: Omarchy OS (Arch Linux based)
• Docker version 29.7.2, default open.mp/docker scripts
• Run image: Ubuntu 22.04