chore: manage bun.lockb in Docker and project configuration

- Update .dockerignore to exclude bun.lockb
- Modify .gitignore to track bun.lockb
- Update Dockerfile to remove bun.lockb copy step
- Add bun.lockb binary lockfile to the repository

Dockerfile

@@ -5,7 +5,7 @@ FROM oven/bun:1.0.25
 WORKDIR /app
 
 # Copy package files
-COPY package.json bun.lockb ./
+COPY package.json ./
 
 # Install dependencies
 RUN bun install