Fix hosted application (#339)

**This PR:**
- Fixes a number of issues with the hosted application:
  - Restores key lines in `puma.rb`, which is how the hosting service knows what application to run
  - Seeds the database with data in production
  - Adds a `favicon.ico`

bin/setup

@@ -26,13 +26,18 @@ FileUtils.chdir APP_ROOT do
   end
 
   puts "\n== Preparing database =="
-  system! "bin/rails db:drop db:create db:migrate"
+  output = `bin/rails db:drop db:create db:migrate`
+  puts output.lines.grep(/database|migrated/)
 
   puts "\n== Removing old logs and tempfiles =="
   system! "bin/rails log:clear tmp:clear"
 
+  if ENV["RAILS_ENV"] == "production"
+    system! "bin/rails db:seed"
+  end
+
   puts "\n== Tips =="
-  puts "- To seed the database, run `rails db:seed`. You must have the TMDB_API_KEY environment variable set."
+  puts "- To seed the database in development, run `rails db:seed`. You must have the TMDB_API_KEY environment variable set."
   puts "- To run the example_app server, run `rails s`."
 
   puts

spec/example_app/config/puma.rb

@@ -25,6 +25,8 @@
 
 # Specifies the `port` that Puma will listen on to receive requests; default is 3000.
 port ENV.fetch("PORT", 3000)
+environment ENV.fetch("RAILS_ENV") { "development" }
+rackup File.expand_path("../config.ru", __dir__)
 
 # Allow puma to be restarted by `bin/rails restart` command.
 plugin :tmp_restart