Refactor .drone.yml

.drone.yml

@@ -5,10 +5,12 @@ name: build-and-deploy
 steps:
   - name: build
     image: klakegg/hugo:alpine
+    environment:
+      HUGO_SECURITY_HTTP_URLS: none
     commands:
       - apk add --no-cache git
       - git submodule update --init --single-branch --depth=1
-      - env HUGO_SECURITY_HTTP_URLS=none hugo
+      - hugo
 
   - name: deploy
     image: alpine/git:latest