diff --git a/.github/workflows/auto-tag.yml b/.github/workflows/auto-tag.yml
new file mode 100644
index 0000000..33446ca
--- /dev/null
+++ b/.github/workflows/auto-tag.yml
@@ -0,0 +1,12 @@
+name: Auto-tag
+on:
+  push:
+    tags:
+      - '*.*.*'
+jobs:
+  auto-tag:
+    name: Auto-tag
+    runs-on: ubuntu-latest
+    steps:
+      - name: Auto-tag
+        uses: silverstripe/gha-auto-tag@main
diff --git a/README.md b/README.md
index 943058c..50d067d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
 # GitHub Action - Run tests
 Run Silverstripe CI matrix tests
 
-See [gha-ci](https://github.com/silverstripe/gha-ci)
+Only intended to be used within [gha-ci](https://github.com/silverstripe/gha-ci)
diff --git a/action.yml b/action.yml
index c17a636..f96e4a6 100644
--- a/action.yml
+++ b/action.yml
@@ -5,9 +5,6 @@ inputs:
   endtoend:
     type: boolean
     default: false
-  # if endtoend_suite is blank or "root" it will run suites defined in root behat.yml
-  # passing this input is intended for extra_jobs running non-root suites
-  # e.g. running "asset-admin" behat from silverstripe-installer
   endtoend_suite:
     type: string
     required: false
@@ -73,7 +70,7 @@ runs:
           FAIL_ON_WARNING='--fail-on-warning'
         fi
         echo "Running PHPUnit with options: $FAIL_ON_WARNING"
-        if [ "$PHPUNIT_SUITE" == "all" ]; then
+        if [ "$PHPUNIT_SUITE" == "all" ] || [ "$PHPUNIT_SUITE" == "" ]; then
           vendor/bin/phpunit --verbose --colors=always $FAIL_ON_WARNING
         else
           vendor/bin/phpunit --verbose --colors=always --testsuite "$PHPUNIT_SUITE" $FAIL_ON_WARNING
@@ -145,7 +142,7 @@ runs:
         rm __behat_headless.yml
         # start chromedriver as a background process
         nohup sh -c "chromedriver" > /dev/null 2>&1 &
-        if [ "$ENDTOEND_SUITE" != "root" ]; then
+        if [ "$ENDTOEND_SUITE" != "root" ] && [ "$ENDTOEND_SUITE" != "" ]; then
           vendor/bin/behat --colors --strict --config __behat.yml "$ENDTOEND_SUITE"
         else
           vendor/bin/behat --colors --strict --config __behat.yml