Use git check-ignore instead of a (incomplete) list of ignored files

The list-based method breaks down in case of ignored folders:
If .gitignore contains foo/, foo/bar.py is still checked.

Signed-off-by: Christoph Höger <christoph.hoeger@piano.io>

lib/functions/buildFileList.sh

@@ -228,26 +228,6 @@ function BuildFileList() {
     fi
   fi
 
-  ###############################
-  # Load the ignored files list #
-  ###############################
-  debug "Loading the files list that Git ignores..."
-  mapfile -t GIT_IGNORED_FILES < <(git -C "${GITHUB_WORKSPACE}" status --ignored --porcelain=v1 --short --untracked-files=normal | grep '!!' | awk -F ' ' '{print $2}' | sed -e 's#^#'"${GITHUB_WORKSPACE}"/'#' | sort)
-  debug "GIT_IGNORED_FILES contents: ${GIT_IGNORED_FILES[*]}"
-
-  # Build an associative array to avoid looping throug the ignored files list
-  local i
-  declare -g -A GIT_IGNORED_FILES_INDEX
-  for i in "${!GIT_IGNORED_FILES[@]}"; do
-    eval GIT_IGNORED_FILES_INDEX["${GIT_IGNORED_FILES[$i]}"]="$i"
-  done
-  debug "--- GIT_IGNORED_FILES_INDEX contents ---"
-  debug "-----------------------"
-  for i in "${!GIT_IGNORED_FILES_INDEX[@]}"; do
-    debug "key: $i, value: ${GIT_IGNORED_FILES_INDEX[$i]}"
-  done
-  debug "---------------------------------------------"
-
   #########################################
   # Check if the Ansible directory exists #
   #########################################
@@ -316,7 +296,7 @@ function BuildFileList() {
     ###################################################
     # Filter files if FILTER_REGEX_EXCLUDE is not set #
     ###################################################
-    if [ "${GIT_IGNORED_FILES_INDEX[$FILE]}" ] && [ "${IGNORE_GITIGNORED_FILES}" == "true" ]; then
+    if git check-ignore "$FILE" && [ "${IGNORE_GITIGNORED_FILES}" == "true" ]; then
       debug "${FILE} is ignored by Git. Skipping ${FILE}"
       continue
     fi