fix(techdocs-cli): config file for development build

Signed-off-by: Camila Belo <camilaibs@gmail.com>

packages/embedded-techdocs-app/app-config.dev.yaml

@@ -1,7 +1,12 @@
 # NOTE: This file is used for testing techdocs-cli locally
 
+app:
+  title: Techdocs Preview App
+  baseUrl: http://localhost:3000
+
 backend:
   baseUrl: http://localhost:7000
 
 techdocs:
+  builder: 'external'
   requestUrl: http://localhost:7000/api

packages/embedded-techdocs-app/package.json

@@ -40,6 +40,7 @@
   "scripts": {
     "start": "backstage-cli app:serve --config ./app-config.yaml --config ./app-config.dev.yaml",
     "build": "backstage-cli app:build --config ./app-config.yaml",
+    "build:dev": "backstage-cli app:build --config ./app-config.dev.yaml",
     "clean": "backstage-cli clean",
     "test": "backstage-cli test",
     "lint": "backstage-cli lint",