add comments

.github/workflows/check.yml

@@ -26,8 +26,10 @@ jobs:
   run_modified_files_in_default_docker:
     runs-on: ubuntu-latest
     steps:
+      # pull current branch
       - name: Checkout HEAD
         uses: actions/checkout@v4
+      # pull master to run git diff command
       - name: Checkout master
         uses: actions/checkout@v4
         with:

Rakefile

@@ -37,6 +37,7 @@ task :in_modified_specs do
 
   # get changes in framework
   lib_diff = `git diff --name-only origin/master -- lib dockerfiles Dockerfile Gemfile Gemfile.lock 2>&1`
+  # check of comparison results/errors
   run_default = true if !lib_diff.empty? || lib_diff.include?('fatal:')
 
   # get changes in scripts and find them in spec