Add env vars to docker-compose and improve env check

config/application.rb

@@ -21,11 +21,11 @@ module App
     end
 
     def email_confirmation?
-      ENV["EMAIL_CONFIRMATION"] == "1"
+      ENV["EMAIL_CONFIRMATION"] == "yes"
     end
 
     def show_logo?
-      ENV["SHOW_LOGO"] == "1"
+      ENV["SHOW_LOGO"] == "yes"
     end
 
     def posts_per_page

config/environments/test.rb

@@ -4,8 +4,8 @@
 # and recreated between test runs. Don't rely on the data there!
 
 # Set up default environment variables
-ENV["EMAIL_CONFIRMATION"] = "0"
-ENV["POSTS_PER_PAGE"] = "8"
+ENV["EMAIL_CONFIRMATION"] = "no"
+ENV["POSTS_PER_PAGE"] = "15"
 
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.