feat: add Docker deployment and Microsoft OAuth support

.gitignore

@@ -1,18 +1,25 @@
-# node
-node_modules/
-dist/
-.vite/
-
-# go
-*.exe
-*.test
-/mengpost-backend/mengpost-backend*
-/mengpost-backend/*.db
-/mengpost-backend/*.db-*
-mengpost.db
-mengpost.db-*
-
+# node
+node_modules/
+dist/
+.vite/
+
+# go
+mengpost-backend/.env
+mengpost-backend/.env.docker
+
+# 生产 SQLite 数据文件（保留 data/.gitkeep）
+/data/*.db
+/data/*.db-*
+*.exe
+*.test
+/mengpost-backend/mengpost-backend*
+/mengpost-backend/*.db
+/mengpost-backend/*.db-*
+mengpost.db
+mengpost.db-*
+
 # editors
 .vscode/
 .idea/
 .DS_Store
+.codex