Modify CI/CD workflow for self-hosted runner

Updated CI/CD workflow to use self-hosted runner and removed SSH tunnel setup.

Author: rabianadeem-121

.github/workflows/ci-cd.yml

@@ -8,7 +8,8 @@ on:
 
 jobs:
   build-and-test:
-    runs-on: ubuntu-latest
+    # Run on self-hosted runner inside the VPC
+    runs-on: [self-hosted, linux]
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
@@ -21,25 +22,13 @@ jobs:
       - name: Install dependencies
         run: npm install
 
-      - name: Set up SSH key
-        run: |
-          echo "${{ secrets.EC2_KEY }}" > ec2_key.pem
-          chmod 600 ec2_key.pem
-
-      - name: Start SSH tunnel to RDS
-        run: |
-          ssh -i ec2_key.pem -o StrictHostKeyChecking=no -N -L 5432:${{ secrets.DB_HOST }}:5432 ${{ secrets.EC2_USER }}@${{ secrets.EC2_HOST }} &
-          echo "SSH tunnel started"
-
-      - name: Wait for tunnel
-        run: sleep 5
-
       - name: Run tests
         env:
-          DB_HOST: localhost
+          DB_HOST: ${{ secrets.DB_HOST }}         # RDS private endpoint
           DB_USER: ${{ secrets.DB_USER }}
           DB_PASSWORD: ${{ secrets.DB_PASSWORD }}
           DB_NAME: ${{ secrets.DB_NAME }}
+          DB_PORT: ${{ secrets.DB_PORT }}
         run: npm test || echo "Skipping tests temporarily"
 
   deploy: