ci: split ci jobs

.github/workflows/docker.yml

@@ -6,7 +6,7 @@ on:
       - main
 
 jobs:
-  build:
+  build-amd64:
     runs-on: ubuntu-latest
     env:
       IMAGE_NAME: mikanbot
@@ -25,10 +25,39 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.CR_PAT }}
 
-      - name: Build and push
+      - name: Build and push (AMD64)
         uses: docker/build-push-action@v4
         with:
-          platforms: linux/amd64,linux/arm64
+          platforms: linux/amd64
+          context: .
+          push: true
+          tags: |
+            ghcr.io/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}:latest
+            ghcr.io/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}:${{ github.sha }}
+
+  build-arm64:
+    runs-on: ubuntu-latest
+    env:
+      IMAGE_NAME: mikanbot
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.CR_PAT }}
+
+      - name: Build and push (ARM64)
+        uses: docker/build-push-action@v4
+        with:
+          platforms: linux/arm64
           context: .
           push: true
           tags: |