Respect folder patch when modified only is used

.github/workflows/push.yml

@@ -9,6 +9,7 @@ jobs:
       uses: ./
       with:
         check-modified-files-only: 'yes'
+        folder-path:'./md'
   markdown-link-check-folders:
     runs-on: ubuntu-latest
     steps:

README.md

@@ -260,3 +260,6 @@ GitHub Action - Markdown link check follows the [GitHub recommended versioning s
   <img src="https://i.imgur.com/1Q1YoHz.gif" alt="Buy me a coffee.">
  </a>
 </p>
+
+
+See https://pubsadasdsadasdasdasdas.aasasdas.odasdarg/onlinepubs/9699919799/utilities/crontab.html#tag_20_25_07

entrypoint.sh

@@ -128,9 +128,9 @@ check_additional_files () {
 
    if [ -n "$FILES" ]; then
       if [ "$MAX_DEPTH" -ne -1 ]; then
-         FIND_CALL=('find' '.' '-type' 'f' '(' ${FILES} ')' '-not' '-path' './node_modules/*' '-maxdepth' "${MAX_DEPTH}" '-exec' 'markdown-link-check' '{}')
+         FIND_CALL=('find' ${FOLDERS} '-type' 'f' '(' ${FILES} ')' '-not' '-path' './node_modules/*' '-maxdepth' "${MAX_DEPTH}" '-exec' 'markdown-link-check' '{}')
       else
-         FIND_CALL=('find' '.' '-type' 'f' '(' ${FILES} ')' '-not' '-path' './node_modules/*' '-exec' 'markdown-link-check' '{}')
+         FIND_CALL=('find' ${FOLDERS} '-type' 'f' '(' ${FILES} ')' '-not' '-path' './node_modules/*' '-exec' 'markdown-link-check' '{}')
       fi
 
       add_options
@@ -164,6 +164,10 @@ if [ "$CHECK_MODIFIED_FILES" = "yes" ]; then
    git fetch origin "${BASE_BRANCH}" --depth=1 > /dev/null
    MASTER_HASH=$(git rev-parse origin/"${BASE_BRANCH}")
 
+   if [ -z "$FOLDERS" ]; then
+      FOLDERS="."
+   fi
+
    FIND_CALL=('markdown-link-check')
 
    add_options

md/dir2/level-1a.md

@@ -6,7 +6,7 @@ www.google.com
 [This is a broken link](https://www.exampleexample.cox)
 
 [This is another broken link](http://ignored-domain.com) but its ignored using a
-configuration file. 
+configuration file.
 
 ### Alpha
 
@@ -22,4 +22,6 @@ But [missing files are reported](missing-example.js).
 [alpha]: #alpha
 [charlie]: #charlie
 
-External file: [Charlie](./file2.md/#charlie)
+External file: [Charlie](./file2.md/#charlie)
+
+Modified.