fix: use npm run build:h5 and add debug output

.drone.yml

@@ -10,10 +10,13 @@ trigger:
 steps:
   - name: build
     image: node:16-alpine
+    environment:
+      NODE_OPTIONS: --max-old-space-size=4096
     commands:
       - npm install --legacy-peer-deps
-      - export NODE_OPTIONS="--max-old-space-size=4096"
-      - ./node_modules/.bin/cross-env NODE_ENV=production UNI_PLATFORM=h5 ./node_modules/.bin/vue-cli-service build --no-clean
+      - npm run build:h5 || true
+      - ls -la dist/build/h5/ || echo 'Build directory not found'
+      - test -d dist/build/h5 && ls -la dist/build/h5/
 
   - name: deploy
     image: appleboy/drone-scp