Initial commit: DECNET honeypot/deception network framework

Core CLI, service plugins (SSH/SMB/FTP/HTTP/RDP), Docker Compose
orchestration, MACVLAN networking, and Logstash log forwarding.

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

templates/cowrie/entrypoint.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+set -e
+
+# Render Jinja2 template using the venv's python (has jinja2)
+/home/cowrie/cowrie-env/bin/python3 - <<'EOF'
+import os
+from jinja2 import Template
+
+with open("/home/cowrie/cowrie.cfg.j2") as f:
+    tpl = Template(f.read())
+
+rendered = tpl.render(**os.environ)
+
+with open("/home/cowrie/cowrie-env/etc/cowrie.cfg", "w") as f:
+    f.write(rendered)
+EOF
+
+exec authbind --deep /home/cowrie/cowrie-env/bin/twistd -n --pidfile= cowrie