added missing package install command

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

@@ -1,57 +1,57 @@
 name: Deploy to Firebase Hosting on merge
 on:
-  push:
-    branches:
-      - master
+    push:
+        branches:
+            - master
 
 jobs:
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout Repo
-        uses: actions/checkout@master
-      - name: Setup Node
-        uses: actions/setup-node@v2
-        with:
-          node-version: 16
-          cache: yarn
-          cache-dependency-path: source/yarn.lock
-      - name: Build
-        run: cd source && yarn build
-      - name: Archive Production Artifact
-        uses: actions/upload-artifact@master
-        with:
-          name: build
-          path: source/build
+    build:
+        name: Build
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout Repo
+              uses: actions/checkout@master
+            - name: Setup Node
+              uses: actions/setup-node@v2
+              with:
+                  node-version: 16
+                  cache: yarn
+                  cache-dependency-path: source/yarn.lock
+            - name: Build
+              run: cd source && yarn install && yarn build
+            - name: Archive Production Artifact
+              uses: actions/upload-artifact@master
+              with:
+                  name: build
+                  path: source/build
 
-  deploy:
-    name: Deploy
-    needs: build
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout Repo
-        uses: actions/checkout@master
-      - name: Download Artifact
-        uses: actions/download-artifact@master
-        with:
-          name: build
-          path: source/build
-      - name: Set target
-        uses: w9jds/firebase-action@master
-        with:
-          args: use developomp-site
-        env:
-          FIREBASE_TOKEN: ${{ secrets.FIREBASE_TOKEN }}
-      - name: Apply target
-        uses: w9jds/firebase-action@master
-        with:
-          args: target:apply hosting stable developomp-site
-        env:
-          FIREBASE_TOKEN: ${{ secrets.FIREBASE_TOKEN }}
-      - name: Deploy to Firebase
-        uses: w9jds/firebase-action@master
-        with:
-          args: deploy --only hosting:stable
-        env:
-          FIREBASE_TOKEN: ${{ secrets.FIREBASE_TOKEN }}
+    deploy:
+        name: Deploy
+        needs: build
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout Repo
+              uses: actions/checkout@master
+            - name: Download Artifact
+              uses: actions/download-artifact@master
+              with:
+                  name: build
+                  path: source/build
+            - name: Set target
+              uses: w9jds/firebase-action@master
+              with:
+                  args: use developomp-site
+              env:
+                  FIREBASE_TOKEN: ${{ secrets.FIREBASE_TOKEN }}
+            - name: Apply target
+              uses: w9jds/firebase-action@master
+              with:
+                  args: target:apply hosting stable developomp-site
+              env:
+                  FIREBASE_TOKEN: ${{ secrets.FIREBASE_TOKEN }}
+            - name: Deploy to Firebase
+              uses: w9jds/firebase-action@master
+              with:
+                  args: deploy --only hosting:stable
+              env:
+                  FIREBASE_TOKEN: ${{ secrets.FIREBASE_TOKEN }}