Update drone.yml to use a separate zip container

.drone.yml

@@ -8,19 +8,17 @@ steps:
     commands:
       - npm install -D
       - npm run rebuild
-#Todo make this into a separate container
+
   - name: package
-    image: alpine
+    image: fuww/alpine-zip
     commands:
-      - apk update
+      - SHORTREV=`echo $DRONE_COMMIT | cut -b 1-8`
-      - apk add zip git 
+      - echo FILENAME=`date +%Y%m%d%H%m`-$SHORTREV.zip  >> environment
-      - echo FILENAME=`date +%Y%m%d%H%m`-`git rev-parse --short HEAD`.zip  >> environment
       - source environment
       - zip -r $FILENAME build
 
   - name: b2
     image: tianon/backblaze-b2:2
-
     environment:
       BUCKET: carbon-artifacts
       ACCOUNT: