replace docker manifest create/push with buildx imagetools create to support default provenance: true single-arch images; see docker/build-push-action#1459 and docker/buildx#1509

Author: tersec

.github/workflows/release.yml

@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2020-2025 Status Research & Development GmbH
+# Copyright (c) 2020-2026 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -419,27 +419,19 @@ jobs:
         run: |
           REFNAME="${{ github.ref }}"
           TAG="${REFNAME#refs/tags/}"
-          docker manifest create \
-            statusim/nimbus-eth2:multiarch-${TAG} \
-            --amend statusim/nimbus-eth2:amd64-${TAG} \
-            --amend statusim/nimbus-eth2:arm64-${TAG} \
-            --amend statusim/nimbus-eth2:arm-${TAG}
-          docker manifest push statusim/nimbus-eth2:multiarch-${TAG}
-          docker manifest create \
-            statusim/nimbus-eth2:multiarch-latest \
-            --amend statusim/nimbus-eth2:amd64-latest \
-            --amend statusim/nimbus-eth2:arm64-latest \
-            --amend statusim/nimbus-eth2:arm-latest
-          docker manifest push statusim/nimbus-eth2:multiarch-latest
-          docker manifest create \
-            statusim/nimbus-validator-client:multiarch-${TAG} \
-            --amend statusim/nimbus-validator-client:amd64-${TAG} \
-            --amend statusim/nimbus-validator-client:arm64-${TAG} \
-            --amend statusim/nimbus-validator-client:arm-${TAG}
-          docker manifest push statusim/nimbus-validator-client:multiarch-${TAG}
-          docker manifest create \
-            statusim/nimbus-validator-client:multiarch-latest \
-            --amend statusim/nimbus-validator-client:amd64-latest \
-            --amend statusim/nimbus-validator-client:arm64-latest \
-            --amend statusim/nimbus-validator-client:arm-latest
-          docker manifest push statusim/nimbus-validator-client:multiarch-latest
+          docker buildx imagetools create -t statusim/nimbus-eth2:multiarch-${TAG} \
+            statusim/nimbus-eth2:amd64-${TAG} \
+            statusim/nimbus-eth2:arm64-${TAG} \
+            statusim/nimbus-eth2:arm-${TAG}
+          docker buildx imagetools create -t statusim/nimbus-eth2:multiarch-latest \
+            statusim/nimbus-eth2:amd64-latest \
+            statusim/nimbus-eth2:arm64-latest \
+            statusim/nimbus-eth2:arm-latest
+          docker buildx imagetools create -t statusim/nimbus-validator-client:multiarch-${TAG} \
+            statusim/nimbus-validator-client:amd64-${TAG} \
+            statusim/nimbus-validator-client:arm64-${TAG} \
+            statusim/nimbus-validator-client:arm-${TAG}
+          docker buildx imagetools create -t statusim/nimbus-validator-client:multiarch-latest \
+            statusim/nimbus-validator-client:amd64-latest \
+            statusim/nimbus-validator-client:arm64-latest \
+            statusim/nimbus-validator-client:arm-latest