feat: add multi-platform support for Docker builds (#43)

Author: abbesBenayache

.github/workflows/publish-docker.yml

@@ -42,6 +42,7 @@ jobs:
         with:
           context: .
           push: true
+          platforms: linux/amd64,linux/arm64
           tags: |
             iexechub/mcp-server:latest
             iexechub/mcp-server:v${{ steps.version.outputs.version }}