This project builds a custom Caddy image with the Outline (Shadowsocks) module and YAML adapter, enabling Caddy to serve as a frontend for Outline servers with automatic HTTPS.

• Docker and Docker Compose
• A domain name pointing to your server's IP address (A record for IPv4, AAAA for IPv6)

1. Configure config.yaml:

   • Replace example.com with your actual domain name.
   • Replace /secret-tcp-path and /secret-udp-path with long, random strings (e.g., generated via openssl rand -hex 16).
   • Replace REPLACE_WITH_SECRET with a Shadowsocks secret. You can generate one using:

     openssl rand -base64 16

2. Build and Run:

   docker-compose up -d --build

3. Verify: Check the logs to ensure Caddy obtained a certificate:

   docker-compose logs -f

To connect using the Outline client or other Shadowsocks clients, you will need to construct a dynamic access key (YAML) or use the specific client configuration for Shadowsocks over Websockets.

Example dynamic-key.yaml for Outline:

transport:
  $type: tcpudp
  tcp:
    $type: shadowsocks
    endpoint:
      $type: websocket
      url: wss://example.com/secret-tcp-path
    cipher: chacha20-ietf-poly1305
    secret: YOUR_SECRET
  udp:
    $type: shadowsocks
    endpoint:
      $type: websocket
      url: wss://example.com/secret-udp-path
    cipher: chacha20-ietf-poly1305
    secret: YOUR_SECRET