Documents how to migrate Gitea LFS from local disk to Tencent Cloud COS,
including the required MINIO_BUCKET_LOOKUP_TYPE=dns setting for COS compatibility.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Replace manual nginx + SSL certificates with Caddy for automatic
Let's Encrypt certificate management. Remove direct HTTP port exposure,
route web traffic through Caddy (80/443) via Docker internal network.
SSH remains on port 2222.
