Remove non-amd64 architecture

Author: akafeng

.github/workflows/push.yml

@@ -22,9 +22,6 @@ jobs:
         uses: docker/build-push-action@v2
         with:
           target: builder
-          platforms: |
-            linux/amd64
-            linux/arm/v7
-            linux/arm64/v8
+          platforms: linux/amd64
           cache-to: type=gha, mode=max
           outputs: type=cacheonly

.github/workflows/release.yml

@@ -41,10 +41,7 @@ jobs:
         uses: docker/build-push-action@v2
         with:
           push: true
-          platforms: |
-            linux/amd64
-            linux/arm/v7
-            linux/arm64/v8
+          platforms: linux/amd64
           cache-from: type=gha
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}