Modified build process to build the frontend only once

.drone.yml

@@ -30,6 +30,8 @@ pipeline:
     group: build
     commands:
       - cd frontend/
+      - rm siteconfig.json
+      - echo '{"API_URL": "/api/v1/"}' > siteconfig.json
       - npm install
       - npm run build
     when:
@@ -83,14 +85,14 @@ pipeline:
     when:
       event: [tag, push]
 
-  static-build-frontend:
-    image: webhippie/nodejs:current
-    pull: true
-    group: build-static
-    commands:
-      - make release-frontend
-    when:
-      event: [push, tag ]
+#  static-build-frontend:
+#    image: webhippie/nodejs:current
+#    pull: true
+#    group: build-static
+#    commands:
+#      - make release-frontend
+#    when:
+#      event: [push, tag ]
 
   after-build-static:
     image: karalabe/xgo-latest:latest