diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 67d472a..262b170 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,18 +8,8 @@ on:
     branches: ["main"]
 jobs:
   build:
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - name: Linux
-            os: ubuntu-latest
-          # - name: macOS
-          #   os: macos-latest
-          # - name: Windows
-          #   os: windows-latest
-    name: ${{ matrix.name }}
-    runs-on: ${{ matrix.os }}
+    name: 'Build docker image'
+    runs-on: 'ubuntu-latest'
     steps:
       - uses: actions/checkout@v4
         with:
@@ -30,23 +20,20 @@ jobs:
         run: |
           brew install docker
           colima start
-
-      - run: docker build  -t lean4monaco .
-      # - name: Set up Docker
-      #   uses: docker/setup-buildx-action@v3
-      # - name: Build server docker image
-      #   uses: docker/build-push-action@v6
-      #   with:
-      #     push: false
-      #     tags: lean4monaco:latest
-          # outputs: type=docker,dest=/tmp/lean4monaco.tar
-      # - name: Upload artifact
-      #   uses: actions/upload-artifact@v4
-      #   with:
-      #     name: lean4monaco
-      #     path: /tmp/lean4monaco.tar
-  # # test:
-  # #   needs: build
+      - name: Set up Docker
+        uses: docker/setup-buildx-action@v3
+      - name: Build server docker image
+        uses: docker/build-push-action@v6
+        with:
+          tags: lean4monaco:latest
+          outputs: type=docker,dest=/tmp/lean4monaco.tar
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: lean4monaco
+          path: /tmp/lean4monaco.tar
+  test:
+    needs: build
   # #   strategy:
   # #     fail-fast: false
   # #     matrix:
@@ -59,10 +46,11 @@ jobs:
   # #           os: windows-latest
   # #   name: ${{ matrix.name }}
   # #   runs-on: ${{ matrix.os }}
-  # #   steps:
-  #     - uses: actions/checkout@v4
-  #       with:
-  #         submodules: true
+    runs-on: 'ubuntu-latest'
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
       # - uses: leanprover/lean-action@v1
       #   if: matrix.os != 'windows-latest'
       #   with:
@@ -90,13 +78,13 @@ jobs:
       # - name: Build
       #   run: npm run build
       # - run: npm run setup_demo
-      # - name: Download server image
-      #   uses: actions/download-artifact@v4
-      #   with:
-      #     name: lean4monaco
-      #     path: /tmp
-      # - name: Load server image
-      #   run: docker load --input /tmp/lean4monaco.tar
+      - name: Download server image
+        uses: actions/download-artifact@v4
+        with:
+          name: lean4monaco
+          path: /tmp
+      - name: Load server image
+        run: docker load --input /tmp/lean4monaco.tar
       - name: Start server
         run: docker run -dit -p 5173:5173 -p 8080:8080 lean4monaco
       - name: Run tests