Update build.yml

.github/workflows/build.yml

@@ -1,4 +1,4 @@
-name: DockerBuild
+name: Build
 on:
   push:
     branches: 
@@ -12,11 +12,7 @@ jobs:
     - uses: actions/setup-node@v1
       with:
         node_version: '13.x'
-    - run: |
-        cd ui
-        yarn
-        yarn build:production
-        cd ..
+    - run: cd ui && yarn && yarn build:production && cd ..
     - uses: actions/upload-artifact@v1
       with:
         name: .uibuild