feat: update Docker configuration and .gitignore, remove unused JSON files

.gitignore

@@ -40,4 +40,26 @@ yarn-error.log*
 # typescript
 *.tsbuildinfo
 next-env.d.ts
+
+# build artifacts
+/dist/
+/build/
+/.next/
+/frontend/.turbo/
+
+# bun
+.bun/
+bunfig.toml.local
+
+# cache & logs
+.turbo/
+*.log
+lerna-debug.log*
+
+# user data & uploads
 /frontend/data/uploads/
+/frontend/data/*.db
+/frontend/data/*.db-shm
+/frontend/data/*.db-wal
+/frontend/data/*.migrated
+/data/uploads/