Rakefile in dockerfile-rails-1.2.5 vs Rakefile in dockerfile-rails-1.3.0

@@ -37,10 +37,10 @@
       sh "docker buildx build . --load -t system:test"
       key = IO.read("config/master.key")
       sh "docker run -p 3000:3000 -e RAILS_MASTER_KEY=#{key} --rm system:test"
     end
   ensure
-    rm_rf "test/tmp/system_test"
+    rm_rf "test/tmp/system_test" unless ENV["TEST_KEEP"]
   end
 
   task all: %w(test:rubocop test test:system)
 end