Local Docker Validation for a .NET Content Hub

This English sample is intentionally small and practical. It validates that HocTat can publish an alternate language version for an existing canonical post without overwriting the original Vietnamese translation.

The sample covers the public language switcher, translated post detail URLs, sitemap and RSS output, and search/listing behavior for the current UI culture.

Because this row is local seed data, it is safe to regenerate the seed package after browser and HTTP validation pass.