Configuration improvements

.github/workflows/build.yml

@@ -1,25 +1,40 @@
 name: Build and Deploy
 
-on: 
+on:
+  pull_request:
   push:
     branches:
       - master
 
 jobs:
   build:
-    name: Build and Deploy
+    name: Build
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-        with:
-          submodules: true
-
       - name: Setup Hugo
         uses: peaceiris/actions-hugo@v2
         with:
           hugo-version: '0.104.3'
           extended: true
 
+      - name: Hugo Build
+        run: hugo --minify
+
+  deploy:
+    name: Deploy
+    runs-on: ubuntu-latest
+    needs: [build]
+    if: github.event_name != 'pull_request'
+    steps:
+      - uses: actions/checkout@v2.3.4
+        with:
+          fetch-depth: 0
+      - uses: peaceiris/actions-hugo@v2
+        with:
+          hugo-version: '0.104.3'
+          extended: true
+
       - name: Configure AWS Credentials
         uses: aws-actions/configure-aws-credentials@v1
         with:
@@ -27,8 +42,6 @@ jobs:
           aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
           aws-region: us-east-1
 
-      - name: Hugo Build
-        run: hugo --minify
-
       - name: Deploy to S3
         run: hugo deploy --maxDeletes -1 --invalidateCDN
+