ci: update build workflow to streamline environment setup and build process

Author: ShreyashSri

.github/workflows/build.yaml

@@ -12,6 +12,7 @@ concurrency:
 
 jobs:
   build:
+    if: github.repository == 'pointblank-club/pbctf'
     runs-on: ubuntu-latest
 
     steps:
@@ -27,7 +28,8 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
-      - name: Create .env from secrets
+      - name: Build
+        run: npm run build
         env:
           CLOUDINARY_API_KEY: ${{ secrets.CLOUDINARY_API_KEY }}
           CLOUDINARY_API_SECRET: ${{ secrets.CLOUDINARY_API_SECRET }}
@@ -45,7 +47,3 @@ jobs:
           NEXT_PUBLIC_POSTHOG_HOST: ${{ secrets.NEXT_PUBLIC_POSTHOG_HOST }}
           NEXT_PUBLIC_POSTHOG_KEY: ${{ secrets.NEXT_PUBLIC_POSTHOG_KEY }}
           RECAPTCHA_SECRET_KEY: ${{ secrets.RECAPTCHA_SECRET_KEY }}
-        run: env | grep -E '^(CLOUDINARY_|EVALUATOR_|METRICS_|MONGODB_|NEXT_PUBLIC_|RECAPTCHA_)' > .env
-
-      - name: Build
-        run: npm run build