diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 05d9222..355b6f7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -14,13 +14,26 @@ jobs:
   Test:
     runs-on: ubuntu-latest
     container:
-      image: alpine
+      image: ghcr.io/postgres-dev/ubuntu-22.04:1.0
       env:
-        PG_BRANCH: REL_15
-#      volumes:
-#        - ${{ github.workspace }}:/work
+        PG_BRANCH: REL_14_STABLE
+
     steps:
-      - uses: actions/checkout@v2
-      - name: Build the Docker image
+      - name: Get Postgres sources
+        uses: actions/checkout@v3
+        with:
+          repository: postgres/postgres
+#          ref: ${{ env.PG_BRANCH }}
+          ref: REL_14_STABLE
+          path: postgres
+
+      - name: Get Ptrack sources
+        uses: actions/checkout@v3
+        with:
+          path: ptrack
+
+      - name: Apply ptrack patch
         run: |
-          ls -l
+          echo var=${PG_BRANCH}
+          git apply --verbose --3way ../ptrack/patches/${PG_BRANCH}-ptrack-core.diff
+        working-directory: postgres