Update GitHub Actions: Set PUBLIC_URL dynamically for branch-based deployment

Author: elainefan331

.github/workflows/build-deploy-zodiac.yml

@@ -19,15 +19,15 @@ jobs:
       - name: Install dependencies
         run: yarn install --frozen-lockfile
 
-      - name: Build React App with Dynamic PUBLIC_URL
-        run: |
-          echo "Building for /dev/dev-fan/"
-          PUBLIC_URL="/dev/dev-fan/" yarn build
-
       - name: Determine Branch Name
         id: get_branch
         run: echo "BRANCH_NAME=${GITHUB_REF#refs/heads/}" >> $GITHUB_ENV
 
+      - name: Build React App with Dynamic PUBLIC_URL
+        run: |
+          echo "Building for /dev/${{ env.BRANCH_NAME }}/"
+          PUBLIC_URL="/dev/${{ env.BRANCH_NAME }}/" yarn build
+
       - name: Copy package to server
         uses: NeuroJSON/[email protected]
         with: