ruby: error while loading shared libraries: libatomic.so.1: cannot open shared object file: No such file or directory

[yahonda]

Steps to reproduce

1. Install Docker
2. Run docker run --rm rubylang/ruby:master ruby -v

Expected behavior

It should show the Ruby version

Actual behavior

ruby: error while loading shared libraries: libatomic.so.1: cannot open shared object file: No such file or directory raised.

$ docker run --rm rubylang/ruby:master ruby -v
Unable to find image 'rubylang/ruby:master' locally
master: Pulling from rubylang/ruby
02de03a7213b: Pull complete 
ce82febd3b46: Pull complete 
4f4fb700ef54: Pull complete 
28cfe10d23b6: Pull complete 
42cf40d9090b: Pull complete 
5b75612b59bd: Pull complete 
74bcd661d1f1: Pull complete 
aee4a5f9848d: Pull complete 
2836c92b2537: Pull complete 
ef43a6adbc36: Pull complete 
1c67fb413e1b: Pull complete 
Digest: sha256:1c796160903526dd2feb095b04bd4d71eee4a49a5418b9535059761d8d894f19
Status: Downloaded newer image for rubylang/ruby:master
ruby: error while loading shared libraries: libatomic.so.1: cannot open shared object file: No such file or directory
$

[yahonda]

It should be addressed once ruby/ruby#15311 is included to the Docker image.

[eightbitraptor]

For reference, the Docker images for 2025-11-21 to 2025-11-23 inclusive, have now been uploaded to the container registries containing a non-working ruby

❯ docker run -it rubylang/ruby:master-20251120 ruby -v
ruby 4.0.0dev (2025-11-20T14:54:29Z master 41b8e440e7) +PRISM [aarch64-linux]

~/git/ruby master
❯ docker run -it rubylang/ruby:master-20251121 ruby -v
ruby: error while loading shared libraries: libatomic.so.1: cannot open shared object file: No such file or directory

~/git/ruby master
❯ docker run -it rubylang/ruby:master-20251122 ruby -v
ruby: error while loading shared libraries: libatomic.so.1: cannot open shared object file: No such file or directory

~/git/ruby master
❯ docker run -it rubylang/ruby:master-20251123 ruby -v
ruby: error while loading shared libraries: libatomic.so.1: cannot open shared object file: No such file or directory

~/git/ruby master
❯ docker run -it rubylang/ruby:master-20251124 ruby -v
ruby 4.0.0dev (2025-11-24T22:32:53Z master 35445a736f) +PRISM [aarch64-linux]

This PR which was merged yesterday should ensure that if we build an image containing a non-functional ruby in the future then the GitHub Actions build workflow will fail and the container will not be pushed to the registry.