musl

Dockerfile

@@ -29,5 +29,10 @@ COPY --from=build /srv/http /srv/http
 RUN install -dm 2750 -o app -g www-data /srv/gems
 RUN chmod 755 /usr/local/bin/geminabox
 
+# https://github.com/rubygems/rubygems/issues/2918
+# https://gitlab.alpinelinux.org/alpine/aports/issues/10808
+COPY ./rubygems-platform-musl.patch /tmp/
+RUN patch -d /usr/lib/ruby/2.5.0 -Np 0 -i /tmp/rubygems-platform-musl.patch
+
 EXPOSE 9292
 VOLUME /srv/gems

rubygems-platform-musl.patch

@@ -0,0 +1,25 @@
+--- rubygems/platform.rb.orig
++++ rubygems/platform.rb
+@@ -89,7 +89,7 @@
+                       when /^dalvik(\d+)?$/ then        [ 'dalvik',    $1  ]
+                       when /^dotnet$/ then              [ 'dotnet',    nil ]
+                       when /^dotnet([\d.]*)/ then       [ 'dotnet',    $1  ]
+-                      when /linux/ then                 [ 'linux',     $1  ]
++                      when /linux-?(\w+)?/ then         [ 'linux',     $1  ]
+                       when /mingw32/ then               [ 'mingw32',   nil ]
+                       when /(mswin\d+)(\_(\d+))?/ then
+                         os, version = $1, $3
+--- rubygems.rb.orig
++++ rubygems.rb
+@@ -764,10 +764,7 @@
+   def self.platforms
+     @platforms ||= []
+     if @platforms.empty?
+-      # XXX: Patched to avoid installing platform-specific gems with binaries
+-      # linked against glibc.
+-      @platforms = [Gem::Platform::RUBY]
+-      #@platforms = [Gem::Platform::RUBY, Gem::Platform.local]
++      @platforms = [Gem::Platform::RUBY, Gem::Platform.local]
+     end
+     @platforms
+   end