[ruby/sinatra] Use auto-configured workers (#10351)

If WEB_CONCURRENCY=auto we don't need to set the workers in the puma.rb

Author: p8

frameworks/Ruby/sinatra/config/mri_puma.rb renamed to frameworks/Ruby/sinatra/config/puma.rb

@@ -1,7 +1,6 @@
 require_relative 'auto_tune'
 
 # FWBM only... use the puma_auto_tune gem in production!
-num_workers, num_threads = auto_tune
+_, num_threads = auto_tune
 
-workers num_workers
 threads num_threads, num_threads

frameworks/Ruby/sinatra/sinatra-postgres.dockerfile

@@ -19,4 +19,4 @@ ENV DBTYPE=postgresql
 
 EXPOSE 8080
 
-CMD bundle exec puma -C config/mri_puma.rb -b tcp://0.0.0.0:8080
+CMD bundle exec puma -C config/puma.rb -b tcp://0.0.0.0:8080

frameworks/Ruby/sinatra/sinatra.dockerfile

@@ -19,4 +19,4 @@ ENV DBTYPE=mysql
 ENV WEB_CONCURRENCY=auto
 EXPOSE 8080
 
-CMD bundle exec puma -C config/mri_puma.rb -b tcp://0.0.0.0:8080
+CMD bundle exec puma -C config/puma.rb -b tcp://0.0.0.0:8080