diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..dee3c12
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,26 @@
+on:
+  push:
+    branches: [main, test-me-*]
+    tags:
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: docker/setup-qemu-action@v3
+    - uses: docker/setup-buildx-action@v3
+    - run: docker login --username "$DOCKER_USER" --password "$DOCKER_PASS" ghcr.io
+      env:
+        DOCKER_USER: ${{ github.actor }}
+        DOCKER_PASS: ${{ secrets.GITHUB_TOKEN }}
+      if: github.event_name != 'pull_request'
+    - uses: docker/build-push-action@v6
+      with:
+        platforms: linux/amd64,linux/arm64
+        push: ${{ github.event_name != 'pull_request' }}
+        build-args: GOOGLE_CLOUD_GO_VERSION=23c02d92c7a1747068eb1fc57dddbad23907d614
+        tags: |
+          ghcr.io/getsentry/cbtemulator:${{ github.sha }}
+          ghcr.io/getsentry/cbtemulator:latest
diff --git a/Makefile b/Makefile
deleted file mode 100644
index 8e5467c..0000000
--- a/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-VERSION := 23c02d92c7a1747068eb1fc57dddbad23907d614
-
-build:
-	docker build -t us.gcr.io/sentryio/cbtemulator:$(VERSION) --build-arg=GOOGLE_CLOUD_GO_VERSION=$(VERSION) .
-
-# Ideally craft's set up to release to here, but some ops people
-# have permissions to push to the sentryio project, and
-# cbtemulator doesn't really need updates often.
-publish: build
-	docker push us.gcr.io/sentryio/cbtemulator:$(VERSION)