diff --git a/.rubocop.yml b/.rubocop.yml
index c21c088e8c..fa7d04f8c6 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -51,6 +51,9 @@ Layout/SpaceInsideArrayLiteralBrackets:
 Layout/SpaceInsidePercentLiteralDelimiters:
   Enabled: false
 
+Metrics/ClassLength:
+  Max: 200
+
 Metrics/ModuleLength:
   Enabled: false
 
diff --git a/lib/mongo/server/app_metadata/environment.rb b/lib/mongo/server/app_metadata/environment.rb
index a558b4e9fa..029257faec 100644
--- a/lib/mongo/server/app_metadata/environment.rb
+++ b/lib/mongo/server/app_metadata/environment.rb
@@ -44,7 +44,7 @@ class ValueTooLong < Mongo::Error; end
 
         # The name and location of the .dockerenv file that will signal the
         # presence of Docker.
-        DOCKERENV_PATH = '/.dockerenv'.freeze
+        DOCKERENV_PATH = '/.dockerenv'
 
         # This value is not explicitly specified in the spec, only implied to be
         # less than 512.
@@ -223,11 +223,11 @@ def detect_container
           runtime = docker_present? && 'docker'
           orchestrator = kubernetes_present? && 'kubernetes'
 
-          if runtime || orchestrator
-            fields[:container] = {}
-            fields[:container][:runtime] = runtime if runtime
-            fields[:container][:orchestrator] = orchestrator if orchestrator
-          end
+          return unless runtime || orchestrator
+
+          fields[:container] = {}
+          fields[:container][:runtime] = runtime if runtime
+          fields[:container][:orchestrator] = orchestrator if orchestrator
         end
 
         # Checks for the existence of a .dockerenv in the root directory.
@@ -244,7 +244,7 @@ def dockerenv_path
         # Checks for the presence of a non-empty KUBERNETES_SERVICE_HOST
         # environment variable.
         def kubernetes_present?
-          ENV['KUBERNETES_SERVICE_HOST'].to_s.length > 0
+          !ENV['KUBERNETES_SERVICE_HOST'].to_s.empty?
         end
 
         # Determines whether the named environment variable exists, and (if
diff --git a/spec/mongo/server/app_metadata/environment_spec.rb b/spec/mongo/server/app_metadata/environment_spec.rb
index a6319d247f..0b0b844b59 100644
--- a/spec/mongo/server/app_metadata/environment_spec.rb
+++ b/spec/mongo/server/app_metadata/environment_spec.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+# rubocop:todo all
 
 require 'spec_helper'
 require 'fileutils'