droneCI: tar.gz -> zip

.drone.yml

@@ -3,12 +3,13 @@ type: docker
 name: default
 
 steps:
--   name: uglifyjs
-    image: node
+-   name: compress_and_zip
+    image: node:alpine
     commands:
     - npm install uglify-js -g
     - for i in *.js; do uglifyjs -c -m -o $i $i; done
-    - tar -cvzf Boiler-AutoLogin.tar.gz manifest.json *.html *.js
+    - apk add zip
+    - zip Boiler-AutoLogin.zip manifest.json *.html *.js
     when:
         event: tag