Build first before serving

Author: joshaber

.devcontainer/devcontainer.json

@@ -15,7 +15,7 @@
     "onCreateCommand": "npm install",
     "postAttachCommand": {
         "server": "npm run serve",
-        "watcher": "npx gulp watch"
+        "watcher": "npx run watch"
     },
     "hostRequirements": {"cpus": 4}
 }

package.json

@@ -9,7 +9,8 @@
     "test": "nyc --check-coverage --lines 100 --functions 100 --branches 100 mocha app/tests",
     "coverage": "nyc report --reporter=text-lcov | node ./node_modules/coveralls/bin/coveralls.js",
     "lint": "./node_modules/.bin/eslint .",
-    "serve": "npx serve -n"
+    "serve": "npx gulp && npx serve -n",
+    "watch": "npx gulp watch"
   },
   "husky": {
     "hooks": {