Run build too

Author: joshaber

.devcontainer/devcontainer.json

@@ -2,7 +2,7 @@
  "extensions": [
  "gh-gh-dogfooding.codespaces-zero"
  ],
- "onCreateCommand": "npm install",
+ "onCreateCommand": "npm install && npm run build",
  "codespaces": {
  "zero": {
  "defaultFile": "src/App.js",