Add per-service customization, stealth hardening, and BYOS support

- HTTP: configurable server_header, response_code, fake_app presets
  (apache/nginx/wordpress/phpmyadmin/iis), extra_headers, custom_body,
  static files directory mount
- SSH/Cowrie: configurable kernel_version, hardware_platform, ssh_banner,
  and users/passwords via COWRIE_USERDB_ENTRIES; switched to build mode
  so cowrie.cfg.j2 persona fields and userdb.txt generation work
- SMTP: configurable banner and MTA hostname
- MySQL: configurable version string in protocol greeting
- Redis: configurable redis_version and os string in INFO response
- BYOS: [custom-*] INI sections define bring-your-own Docker services
- Stealth: rename all *_honeypot.py → server.py; replace HONEYPOT_NAME
  env var with NODE_NAME across all 22+ service templates and plugins;
  strip "honeypot" from all in-container file content
- Config: DeckyConfig.service_config dict; INI [decky-N.svc] subsections;
  composer passes service_cfg to compose_fragment
- 350 tests passing (100%)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

templates/docker_api/Dockerfile

@@ -8,7 +8,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 ENV PIP_BREAK_SYSTEM_PACKAGES=1
 RUN pip3 install --no-cache-dir flask
 
-COPY docker_api_honeypot.py /opt/docker_api_honeypot.py
+COPY server.py /opt/server.py
 COPY entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh
 

templates/docker_api/entrypoint.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 set -e
-exec python3 /opt/docker_api_honeypot.py
+exec python3 /opt/server.py

templates/docker_api/server.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 """
-Docker API honeypot.
+Docker APIserver.
 Serves a fake Docker REST API on port 2375. Responds to common recon
 endpoints (/version, /info, /containers/json, /images/json) with plausible
 but fake data. Logs all requests as JSON.
@@ -13,7 +13,7 @@ from datetime import datetime, timezone
 
 from flask import Flask, request
 
-HONEYPOT_NAME = os.environ.get("HONEYPOT_NAME", "docker-host")
+NODE_NAME = os.environ.get("NODE_NAME", "docker-host")
 LOG_TARGET = os.environ.get("LOG_TARGET", "")
 
 app = Flask(__name__)
@@ -38,7 +38,7 @@ _INFO = {
     "MemoryLimit": True,
     "SwapLimit": True,
     "KernelMemory": False,
-    "Name": HONEYPOT_NAME,
+    "Name": NODE_NAME,
     "DockerRootDir": "/var/lib/docker",
     "HttpProxy": "",
     "HttpsProxy": "",
@@ -73,7 +73,7 @@ def _log(event_type: str, **kwargs) -> None:
     event = {
         "ts": datetime.now(timezone.utc).isoformat(),
         "service": "docker_api",
-        "host": HONEYPOT_NAME,
+        "host": NODE_NAME,
         "event": event_type,
         **kwargs,
     }
@@ -127,5 +127,5 @@ def catch_all(path):
 
 
 if __name__ == "__main__":
-    _log("startup", msg=f"Docker API honeypot starting as {HONEYPOT_NAME}")
+    _log("startup", msg=f"Docker API server starting as {NODE_NAME}")
     app.run(host="0.0.0.0", port=2375, debug=False)