Remove Dockerfile, fix jsconfig path, add post

Remove the project Dockerfile (multi-stage Hugo → nginx build). Update assets/jsconfig.json to use Windows-style path separators for theme assets. Add new blog post content/post/2026/02/19/index.md (Newsletter #82, Vietnamese) with curated links and summaries.

assets/jsconfig.json

@@ -3,7 +3,7 @@
   "baseUrl": ".",
   "paths": {
    "*": [
-    "../themes/hugo-theme-stack/assets/*"
+    "..\\themes\\hugo-theme-stack\\assets\\*"
    ]
   }
  }