diff --git a/.github/workflows/shfmt.yml b/.github/workflows/shfmt.yml
index d81f771ab..e19b18490 100644
--- a/.github/workflows/shfmt.yml
+++ b/.github/workflows/shfmt.yml
@@ -4,6 +4,7 @@ on:
   pull_request:
     paths:
       - "**/*.sh"
+      - ".github/workflows/shfmt.yml"
 
 permissions:
   contents: read
@@ -20,4 +21,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - run: shellcheck *.sh
+      - name: Run ShellCheck
+        uses: bewuethr/shellcheck-action@80bac2daa9fcf95d648200a793d00060857e6dc4 # v2.3.0
diff --git a/functions.sh b/functions.sh
index 444dc2f67..2beafd5dd 100755
--- a/functions.sh
+++ b/functions.sh
@@ -105,7 +105,7 @@ function get_supported_arches() {
   lines=$(grep "${variant}" "$(dirname "${version}")"/architectures 2> /dev/null | cut -d' ' -f1)
 
   # Get version specific supported architectures if there is specialized information
-  if [ -a "${version}"/architectures ]; then
+  if [ -e "${version}"/architectures ]; then
     lines=$(grep "${variant}" "${version}"/architectures 2> /dev/null | cut -d' ' -f1)
   fi
 
@@ -150,7 +150,7 @@ function get_versions() {
   fi
 
   for dir in "${dirs[@]}"; do
-    if [ -a "${dir}/Dockerfile" ] || [ -a "${dir}/${default_variant}/Dockerfile" ]; then
+    if [ -e "${dir}/Dockerfile" ] || [ -e "${dir}/${default_variant}/Dockerfile" ]; then
       versions+=("${dir#./}")
     fi
   done