Merge pull request #9552 from p8/sinatra/iodine-set-workers

[ruby/sinatra] Detect workers for Iodine

frameworks/Ruby/sinatra-sequel/sinatra-sequel-postgres-iodine-mri.dockerfile

@@ -17,4 +17,4 @@ ENV DBTYPE=postgresql
 
 EXPOSE 8080
 
-CMD bundle exec iodine -p 8080
+CMD bundle exec iodine -p 8080 -w $(ruby config/auto_tune.rb | grep -Eo '[0-9]+' | head -n 1)