Update .github/workflows/build_pull_request.yml

.github/workflows/build_pull_request.yml

@@ -15,25 +15,14 @@ jobs:
   prepare:
     name: Prepare job
     runs-on: ubuntu-22.04
+    container:
+      image: node:18-bullseye
     outputs:
       individualMatrix: ${{ steps.generate-matrices.outputs.individualMatrix }}
     steps:
       - name: Clone repo
         uses: https://github.com/actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
         
-      - name: Install Node.js manually
-        run: |
-          apt-get update
-          apt-get install -y curl
-          curl -fsSL https://deb.nodesource.com/setup_18.x | bash -
-          apt-get install -y nodejs
-
-      - name: Install dependencies
-        run: npm install
-
-      - name: Run tests
-        run: npm test
-
       - name: Validate Gradle Wrapper
         uses: https://github.com/gradle/wrapper-validation-action@a494d935f4b56874c4a5a87d19af7afcf3a163d0 # v2