Try this

Author: Edouard-chin

lib/cibuildgem/cli.rb

@@ -2,6 +2,7 @@
 
 require "thor"
 require "rake/extensiontask"
+require_relative "container"
 
 module Cibuildgem
   class CLI < Thor
@@ -27,6 +28,9 @@ def exit_on_failure?
       to the compilation.
     MSG
     def compile
+
+      # return run_in_container if Gem::Platform.local.os == "linux"
+
       run_rake_tasks!("cibuildgem:setup", :compile)
     end
 
@@ -44,6 +48,8 @@ def compile
     MSG
     method_option "gemspec", type: "string", required: false, desc: "The gemspec to use. Defaults to the gemspec from the current working directory."
     def package
+      return run_in_container
+
       ENV["RUBY_CC_VERSION"] ||= compilation_task.ruby_cc_version
 
       run_rake_tasks!("cibuildgem:setup", :cross, :native, :gem)
@@ -148,5 +154,9 @@ def compilation_task
 
       Kernel.exit(false)
     end
+
+    def run_in_container
+      Container.execute("cibuildgem package", runtime_ruby: RUBY_VERSION)
+    end
   end
 end

lib/cibuildgem/container.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+require "open3"
+
+module Cibuildgem
+  module Container
+    extend self
+
+    def execute(command, runtime_ruby:)
+      dockerfile = File.expand_path("../docker/Dockerfile", __FILE__)
+      system("podman image build -t cibuildgem -f #{dockerfile}", exception: true)
+
+      puts ENV["RUNNER_TEMP"]
+      # system("podman container run -it -v /Users/edouard/Documents/rubies:/opt/rubies -v /Users/edouard/Documents/config.yml:/root/.rake-compiler/config.yml cibuildgem /bin/bash")
+    end
+
+    def cpu
+      Gem::Platform.local.cpu
+    end
+  end
+end

Dockerfile lib/cibuildgem/docker/DockerfileDockerfile renamed to lib/cibuildgem/docker/Dockerfile

@@ -7,5 +7,6 @@ RUN cd chruby-0.3.9 && ./scripts/setup.sh
 RUN mkdir -p /opt/rubies
 RUN curl -L https://github.com/Shopify/cibuildgem/releases/download/ruby-builder/ruby-3.4.7.zip -O
 RUN unzip ruby-3.4.7.zip -d /opt/rubies
+RUN bash -c "source /usr/local/share/chruby/chruby.sh && chruby 3.4.7 && gem install cibuildgem"
 RUN echo "source /usr/local/share/chruby/chruby.sh" >> ~/.bashrc
 RUN echo "chruby 3.4.7" >> ~/.bashrc