only compile assets on upgrade if they aren't prebuilt

bin/postal

@@ -53,7 +53,12 @@ case "$1" in
         ;;
 
     upgrade)
-        run "bundle exec rake assets:precompile db:migrate"
+        if [ ! -f "public/assets/.prebuilt" ]; then
+            echo 'Compiling Assets'
+            run "bundle exec rake assets:precompile"
+        fi
+        echo 'Migrating database'
+        run "bundle exec rake db:migrate"
         ;;
 
     console)

script/build_package.rb

@@ -70,6 +70,7 @@ File.open("#{WC_PATH}/lib/postal/version.rb", 'w') { |f| f.write(version_file) }
 unless ENV['NO_ASSETS']
   puts "\e[44;37mCompiling assets\e[0m"
   system!("cd #{WC_PATH} && bundle exec rake assets:precompile")
+  system!("touch #{WC_PATH}/public/assets/.prebuilt")
 end
 
 # Remove files that shouldn't be distributed