rename promotion target to staging

.drone.yml

@@ -37,7 +37,7 @@ steps:
         if [[ $COMMIT_HASH != $IMAGE_COMMIT_HASH ]]; then
           echo 'Updates available, triggering server build.'
           curl -X POST -H "Authorization: Bearer $DRONE_API_TOKEN" \
-          https://drone.jfmonty2.com/api/repos/jfmonty2/drone/builds/$DRONE_BUILD_NUMBER/promote?target=server-build
+          https://drone.jfmonty2.com/api/repos/jfmonty2/drone/builds/$DRONE_BUILD_NUMBER/promote?target=staging
         else
           echo 'Image is already up to date.'
         fi
@@ -57,7 +57,7 @@ trigger:
   event:
     - promote
   target:
-    - server-build
+    - staging
 
 steps:
   - name: prepare