use output=type=docker

.github/actions/build-image/action.yml

@@ -47,5 +47,5 @@ runs:
           --cache-from "${repo}:${{ inputs.tag }}" \
           --image-name "${repo}:${{ inputs.tag }}" \
           --workspace-folder "$(realpath -m ./image)" \
-          --output "type=oci,dest=${{ runner.temp }}/${{ inputs.arch }}.tar" \
+          --output "type=docker,dest=${{ runner.temp }}/${{ inputs.arch }}.tar" \
           ;

.github/workflows/build-and-push-image.yml

@@ -65,7 +65,7 @@ jobs:
         with:
           persist-credentials: false
 
-        name: Free up disk space
+      - name: Free up disk space
         uses: ./.github/actions/free-disk-space
         with:
           tool_cache: "${{ runner.tool_cache }}"
@@ -95,12 +95,12 @@ jobs:
           hashes=();
 
           for arch in "amd64" "arm64"; do
-            # Load the linux/$arch image with the final name
-            docker import --platform "linux/${arch}" "${{ runner.temp }}/${arch}.tar" ${name};
-            # Push the local image to the registry to get its remote hash
-            hash="$(docker push ${name} | tail -n1 | cut -d' ' -f3)";
-            # Save the remote hash for use below
-            hashes+=("$hash");
+            # Load the linux/$arch and tag the loaded image with the final name
+            docker image tag \
+              $(docker load --input "${{ runner.temp }}/${arch}.tar" | tail -n1 | cut -d' ' -f3) \
+              ${name};
+            # Push the local image to the registry to get its remote hash and save the remote hash for use below
+            hashes+=("$(docker push ${name} | tail -n1 | cut -d' ' -f3)");
           done
 
           # Create and push the multiarch manifest