diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..5e25cb2
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,20 @@
+name: Bazel Build
+on:
+    push: {}
+    pull_request: {}
+jobs:
+  build:
+    name: Build everything
+    runs-on: ubuntu-latest
+    steps:
+        runs-on: ubuntu-latest
+        steps:
+        - uses: actions/checkout@v4
+        - uses: bazelbuild/setup-bazelisk@v3
+        - name: Mount bazel cache
+          uses: actions/cache@v4
+          with:
+            path: "~/.cache/bazel"
+            key: bazel
+        - name: Build
+          run: bazel build //...
diff --git a/.github/workflows/github-actions-demo.yml b/.github/workflows/github-actions-demo.yml
deleted file mode 100644
index 15a61d6..0000000
--- a/.github/workflows/github-actions-demo.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-name: GitHub Actions Demo
-run-name: ${{ github.actor }} is testing out GitHub Actions 🚀
-on: [push]
-jobs:
-  Explore-GitHub-Actions:
-    runs-on: ubuntu-latest
-    steps:
-      - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
-      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by GitHub!"
-      - run: echo "🔎 The name of your branch is ${{ github.ref }} and your repository is ${{ github.repository }}."
-      - name: Check out repository code
-        uses: actions/checkout@v4
-      - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner."
-      - run: echo "🖥️ The workflow is now ready to test your code on the runner."
-      - name: List files in the repository
-        run: |
-          ls ${{ github.workspace }}
-      - run: echo "🍏 This job's status is ${{ job.status }}."