diff --git a/config/environments/custom/production.rb b/config/environments/custom/production.rb
index ffdddca82..e1ad2f4a8 100644
--- a/config/environments/custom/production.rb
+++ b/config/environments/custom/production.rb
@@ -1,4 +1,8 @@
 Rails.application.configure do
   # Overwrite settings for the production environment or add your own
-  # custom settings for this environment.
+  # custom settings for this environment. Note these changes will
+  # also affect the staging and preproduction environments, so edit the
+  # `config/environments/custom/staging.rb` and/or
+  # `config/environments/custom/preproduction.rb` files if you don't
+  # want these changes to be applied there as well.
 end
diff --git a/config/environments/staging.rb b/config/environments/staging.rb
index 5c53afc8e..b18206e7c 100644
--- a/config/environments/staging.rb
+++ b/config/environments/staging.rb
@@ -1,138 +1,7 @@
-require "active_support/core_ext/integer/time"
+require Rails.root.join("config", "environments", "production")
 
 Rails.application.configure do
-  # Settings specified here will take precedence over those in config/application.rb.
-
-  # Code is not reloaded between requests.
-  config.cache_classes = true
-
-  # Eager load code on boot. This eager loads most of Rails and
-  # your application in memory, allowing both threaded web servers
-  # and those relying on copy on write to perform better.
-  # Rake tasks automatically ignore this option for performance.
-  config.eager_load = true
-
-  # Because autoloading is disabled in production environments with Rails 5,
-  # using autoload_paths will not load needed classes from specified paths.
-  # The solution to this, is to ask Rails to eager load classes.
-  config.eager_load_paths += ["#{config.root}/lib"]
-
-  # Full error reports are disabled and caching is turned on.
-  config.consider_all_requests_local       = false
-  config.action_controller.perform_caching = true
-
-  # Ensures that a master key has been made available in either ENV["RAILS_MASTER_KEY"]
-  # or in config/master.key. This key is used to decrypt credentials (and other encrypted files).
-  # config.require_master_key = true
-
-  # Disable serving static files from the `/public` folder by default since
-  # Apache or NGINX already handles this.
-  config.public_file_server.enabled = ENV["RAILS_SERVE_STATIC_FILES"].present?
-
-  # Compress JavaScripts and CSS.
-  config.assets.js_compressor = Uglifier.new(harmony: true)
-  # config.assets.css_compressor = :sass
-
-  # Do not fallback to assets pipeline if a precompiled asset is missed.
-  config.assets.compile = false
-
-  # Enable serving of images, stylesheets, and JavaScripts from an asset server.
-  # config.asset_host = "http://assets.example.com"
-
-  # Specifies the header that your server uses for sending files.
-  # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for Apache
-  # config.action_dispatch.x_sendfile_header = "X-Accel-Redirect" # for NGINX
-
-  # Mount Action Cable outside main process or domain.
-  # config.action_cable.mount_path = nil
-  # config.action_cable.url = "wss://example.com/cable"
-  # config.action_cable.allowed_request_origins = [ "http://example.com", /http:\/\/example.*/ ]
-
-  # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
-  # Configure force_ssl in secrets.yml
-  config.force_ssl = Rails.application.secrets.force_ssl
-
-  # Include generic and useful information about system operation, but avoid logging too much
-  # information to avoid inadvertent exposure of personally identifiable information (PII).
   config.log_level = :debug
-
-  # Prepend all log lines with the following tags.
-  config.log_tags = [:request_id]
-
-  # Use a different cache store in production.
-  config.cache_store = :mem_cache_store, { namespace: proc { Tenant.current_schema }}
-
-  # Use a real queuing backend for Active Job (and separate queues per environment).
-  # config.active_job.queue_adapter     = :resque
-  # config.active_job.queue_name_prefix = "consul_#{Rails.env}"
-
-  config.action_mailer.perform_caching = false
-
-  # Ignore bad email addresses and do not raise email delivery errors.
-  # Set this to true and configure the email server for immediate delivery to raise delivery errors.
-  config.action_mailer.raise_delivery_errors = true
-  config.action_mailer.default_url_options = { host: Rails.application.secrets.server_name }
-
-  # Configure your SMTP service credentials in secrets.yml
-  if Rails.application.secrets.smtp_settings
-    config.action_mailer.delivery_method = Rails.application.secrets.mailer_delivery_method || :smtp
-    config.action_mailer.smtp_settings = Rails.application.secrets.smtp_settings
-  end
-
-  # Disable locale fallbacks for I18n
-  # (prevents using fallback locales set in application.rb).
-  # config.i18n.fallbacks = false
-
-  # Send deprecation notices to registered listeners.
-  config.active_support.deprecation = :notify
-
-  # Log disallowed deprecations.
-  config.active_support.disallowed_deprecation = :log
-
-  # Tell Active Support which deprecation messages to disallow.
-  config.active_support.disallowed_deprecation_warnings = []
-
-  # Use default logging formatter so that PID and timestamp are not suppressed.
-  config.log_formatter = ::Logger::Formatter.new
-
-  # Rotate logger
-  logger = ActiveSupport::Logger.new(config.default_log_file, "daily")
-  logger.formatter = config.log_formatter
-  config.logger = ActiveSupport::TaggedLogging.new(logger)
-
-  # Use a different logger for distributed setups.
-  # require "syslog/logger"
-  # config.logger = ActiveSupport::TaggedLogging.new(Syslog::Logger.new "app-name")
-
-  if ENV["RAILS_LOG_TO_STDOUT"].present?
-    logger           = ActiveSupport::Logger.new(STDOUT)
-    logger.formatter = config.log_formatter
-    config.logger    = ActiveSupport::TaggedLogging.new(logger)
-  end
-
-  # Do not dump schema after migrations.
-  config.active_record.dump_schema_after_migration = false
-
-  # Inserts middleware to perform automatic connection switching.
-  # The `database_selector` hash is used to pass options to the DatabaseSelector
-  # middleware. The `delay` is used to determine how long to wait after a write
-  # to send a subsequent read to the primary.
-  #
-  # The `database_resolver` class is used by the middleware to determine which
-  # database is appropriate to use based on the time delay.
-  #
-  # The `database_resolver_context` class is used by the middleware to set
-  # timestamps for the last write to the primary. The resolver uses the context
-  # class timestamps to determine how long to wait before reading from the
-  # replica.
-  #
-  # By default Rails will store a last write timestamp in the session. The
-  # DatabaseSelector middleware is designed as such you can define your own
-  # strategy for connection switching and pass that into the middleware through
-  # these configuration options.
-  # config.active_record.database_selector = { delay: 2.seconds }
-  # config.active_record.database_resolver = ActiveRecord::Middleware::DatabaseSelector::Resolver
-  # config.active_record.database_resolver_context = ActiveRecord::Middleware::DatabaseSelector::Resolver::Session
 end
 
 require Rails.root.join("config", "environments", "custom", "staging")