reuse docker workflow

.github/workflows/build.yml

@@ -3,6 +3,8 @@ name: Build Docker image
 on:
   pull_request:
   push:
+    branches:
+      - main
 
 concurrency:
   group: build
@@ -10,17 +12,10 @@ concurrency:
 
 jobs:
   docker:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-        with:
-          install: true
-
-      - name: Build and push
-        uses: docker/build-push-action@v3
-        with:
-          platforms: linux/amd64,linux/arm64
-          push: false
+    name: Build Docker Image
+    uses: cupcakearmy/workflows/.github/workflows/docker.yml@main
+    with:
+      name: cupcakearmy/ddns-cloudflare
+    secrets:
+      DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+      DOCKER_TOKEN: ${{ secrets.DOCKER_TOKEN }}