ci: remove arm64 support for now

.gitea/workflows/docker-build.yml

@@ -42,7 +42,7 @@ jobs:
       uses: docker/build-push-action@v5
       with:
         context: .
-        platforms: linux/amd64,linux/arm64
+        platforms: linux/amd64
         push: true
         tags: ${{ steps.meta.outputs.tags }}
         labels: ${{ steps.meta.outputs.labels }}
@@ -57,6 +57,7 @@ jobs:
       run: |
         echo "## Docker Build Summary" >> $GITHUB_STEP_SUMMARY
         echo "- **Image**: \`${{ env.REGISTRY }}/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}\`" >> $GITHUB_STEP_SUMMARY
+        echo "- **Platform**: linux/amd64" >> $GITHUB_STEP_SUMMARY
         echo "- **Tags**: " >> $GITHUB_STEP_SUMMARY
         echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
         echo "${{ steps.meta.outputs.tags }}" >> $GITHUB_STEP_SUMMARY