diff --git a/docker/entrypoints/helpers/pg_database_url.sh b/docker/entrypoints/helpers/pg_database_url.rb
similarity index 75%
rename from docker/entrypoints/helpers/pg_database_url.sh
rename to docker/entrypoints/helpers/pg_database_url.rb
index 89a36c164..759ef2f9a 100755
--- a/docker/entrypoints/helpers/pg_database_url.sh
+++ b/docker/entrypoints/helpers/pg_database_url.rb
@@ -5,6 +5,6 @@ require 'uri'
 if !ENV['DATABASE_URL'].nil? && ENV['DATABASE_URL'] != ''
   uri = URI(ENV['DATABASE_URL'])
   puts "export POSTGRES_HOST=#{uri.host} POSTGRES_PORT=#{uri.port} POSTGRES_USERNAME=#{uri.user}"
-elif ENV['POSTGRES_PORT'].nil? || ENV['POSTGRES_PORT'] == ''
-  puts "export POSTGRES_PORT=5432" 
+elsif ENV['POSTGRES_PORT'].nil? || ENV['POSTGRES_PORT'] == ''
+  puts 'export POSTGRES_PORT=5432'
 end
diff --git a/docker/entrypoints/rails.sh b/docker/entrypoints/rails.sh
index 7b77e33db..8bdf0551c 100755
--- a/docker/entrypoints/rails.sh
+++ b/docker/entrypoints/rails.sh
@@ -10,7 +10,7 @@ echo "Waiting for postgres to become ready...."
 
 # Let DATABASE_URL env take presedence over individual connection params.
 # This is done to avoid printing the DATABASE_URL in the logs
-$(docker/entrypoints/helpers/pg_database_url.sh)
+$(docker/entrypoints/helpers/pg_database_url.rb)
 PG_READY="pg_isready -h $POSTGRES_HOST -p $POSTGRES_PORT -U $POSTGRES_USERNAME"
 
 until $PG_READY