👻 use correct branch in workflow

Signed-off-by: Pranav Gaikwad <[email protected]>

.github/workflows/testing.yaml

@@ -6,6 +6,33 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
+      - name: Extract pull request number from inputs or PR description
+        run: |
+          PULL_REQUEST_NUMBER=$(echo "${{ github.event.pull_request.body }}" | grep -oP 'Analyzer PR: \K\d+' || true)
+          echo "ANALYZER_REF=${CURRENT_BRANCH#refs/heads/}" >>$GITHUB_ENV
+          if [ ! -z "${BASE_BRANCH}" ]; then
+            echo "ANALYZER_REF=${BASE_BRANCH}" >>$GITHUB_ENV
+          fi            
+          if [ ! -z "$PULL_REQUEST_NUMBER" ]; then
+            echo "ANALYZER_REF=refs/pull/$PULL_REQUEST_NUMBER/merge" >>$GITHUB_ENV
+          fi
+          echo "Using analyzer branch ${env.ANALYZER_REF}"
+        env:
+          CURRENT_BRANCH: ${{ github.ref }}
+          BASE_BRANCH: ${{ github.event.pull_request.base.ref }}
+
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+          repository: konveyor/analyzer-lsp
+          ref: "${{ env.ANALYZER_REF}}"
+          path: analyzer-lsp
+
+      - name: Build anaylzer and save image
+        working-directory: analyzer-lsp
+        run: |
+          podman build -t quay.io/konveyor/analyzer-lsp:latest .
+      
       - uses: actions/checkout@v3
 
       - name: Build image and binary