configure PR checks and staging

.firebaserc

@@ -0,0 +1,5 @@
+{
+  "projects": {
+    "default": "astar-docs-v3-staging"
+  }
+}

.github/workflows/firebase-hosting-merge.yml

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+# This file was auto-generated by the Firebase CLI
+# https://github.com/firebase/firebase-tools
+
+name: Deploy to Firebase Hosting on merge
+'on':
+  push:
+    branches:
+      - main
+jobs:
+  build_and_deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: npm ci && npm run build
+      - uses: FirebaseExtended/action-hosting-deploy@v0
+        with:
+          repoToken: '${{ secrets.GITHUB_TOKEN }}'
+          firebaseServiceAccount: '${{ secrets.FIREBASE_SERVICE_ACCOUNT_ASTAR_DOCS_V3_STAGING }}'
+          channelId: live
+          projectId: astar-docs-v3-staging

.github/workflows/firebase-hosting-pull-request.yml

@@ -0,0 +1,17 @@
+# This file was auto-generated by the Firebase CLI
+# https://github.com/firebase/firebase-tools
+
+name: Deploy to Firebase Hosting on PR
+'on': pull_request
+jobs:
+  build_and_preview:
+    if: '${{ github.event.pull_request.head.repo.full_name == github.repository }}'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: npm ci && npm run build
+      - uses: FirebaseExtended/action-hosting-deploy@v0
+        with:
+          repoToken: '${{ secrets.GITHUB_TOKEN }}'
+          firebaseServiceAccount: '${{ secrets.FIREBASE_SERVICE_ACCOUNT_ASTAR_DOCS_V3_STAGING }}'
+          projectId: astar-docs-v3-staging

firebase.json

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+{
+  "hosting": {
+    "public": "build",
+    "ignore": [
+      "firebase.json",
+      "**/.*",
+      "**/node_modules/**"
+    ]
+  }
+}