diff --git a/.gitignore b/.gitignore
index ec60e67..02350fb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,4 +27,5 @@
 # Ignore master key for decrypting credentials and more.
 /config/master.key
 
-.env
\ No newline at end of file
+.env
+.env.production
\ No newline at end of file
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 7f3423c..299f774 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -97,4 +97,6 @@
     logger.formatter = config.log_formatter
     config.logger    = ActiveSupport::TaggedLogging.new(logger)
   end
+
+  config.hosts << 'localhost:3000' # required when running within a Docker container (Kamal)
 end