Add Docker configuration for deployment and fix Supabase types for contacts table

.dockerignore

@@ -1,15 +1,8 @@
 node_modules
-dist
 .git
 .gitignore
 README.md
 README_BACKEND.md
 BACKEND_SETUP.md
-.env
 bun.lockb
-package-lock.json
-.dockerignore
-Dockerfile
-Dockerfile.backend
-docker-compose.yml
-nginx.conf
+.dockerignore