added debug step and printenv.

.drone.yml

@@ -9,13 +9,19 @@ metadata:
 trigger:
   branch:
   - main
-    #  event:
+    event:
-    #  - tag
+    - tag
 
 clone:
   disable: true
 
 steps:
+
+  - name: debug
+    image: alpine
+    commands:
+      - printenv
+
   - name: clone
     image: alpine/git
     settings: