fix review suggest : create listup function

entrypoint.sh

@@ -28,25 +28,21 @@ list_releases() {
   fi
 }
 
-LATEST_VERSION="${CURRENT_VERSION}"
+# Return version list from tags(refs/tags/vA.B.C and vA.B.C^{}) or releases
+list_versions() {
   if [ "${INPUT_TAG:-false}" = "true" ]; then
-  echo "Check remote tag instead of release" >&2
-  LATEST_VERSION="$(\
-    git ls-remote -q --tags "https://github.com/${REPO}.git" | \
-    awk '{ print $2 }' | \
-    grep -oP '\d+\.\d+(\.\d+)*(-[^'\''\"\s]*)?$' | \
-    sort --version-sort --reverse | \
-    head -n1 \
-    )"
+    git ls-remote -q --tags "https://github.com/${REPO}.git" | awk '{ print $2 }'
   else
+    list_releases |  jq -r '.[] | .tag_name'
+  fi
+}
+
 LATEST_VERSION="$(\
-    list_releases | \
-    jq -r '.[] | .tag_name' | \
+  list_versions | \
   grep -oP '\d+\.\d+(\.\d+)*(-[^'\''\"\s]*)?$' | \
   sort --version-sort --reverse | \
   head -n1 \
   )"
-fi
 
 if [ -z "${LATEST_VERSION}" ]; then
   echo "cannot get latest ${REPO} version"