diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1538c66e1..cdd22592b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -3,17 +3,9 @@ name: Build
 on:
   push:
   pull_request:
+    branches: [main]
+    types: [opened, synchronize, reopened, labeled, unlabeled]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Check out
-        uses: actions/checkout@v4
-      - name: Setup Node
-        uses: actions/setup-node@v4
-      - name: Install
-        run: yarn
-      - name: Build
-        run: yarn build
+    uses: cordiverse/workflows/.github/workflows/build.yml@main
diff --git a/.github/workflows/post-comment.yml b/.github/workflows/post-comment.yml
new file mode 100644
index 000000000..c5ec5a976
--- /dev/null
+++ b/.github/workflows/post-comment.yml
@@ -0,0 +1,14 @@
+name: Comment on Pull Requests
+
+on:
+  workflow_run:
+    workflows: ["Build"]
+    types:
+      - completed
+
+jobs:
+  upload:
+    permissions:
+      contents: read
+      pull-requests: write
+    uses: cordiverse/workflows/.github/workflows/post-comment.yml@main