Add sanitized compose for caddy-vm and automation-vm stacks

Caddy (+ a truncated/sanitized example Caddyfile showing the mTLS +
Authentik forward-auth pattern without the real subdomain list),
Hawser, Gitea (private instance only, dropped the public-mirror
service - that's already its own public thing), Kestra (genericized
the ansible-repo/SSH-key bind mounts), Mosquitto, n8n, NetBox,
Node-RED.

Docker/Mosquitto/docker-compose.yaml

@@ -0,0 +1,19 @@
+services:
+  mosquitto:
+    image: eclipse-mosquitto:latest
+    container_name: mosquitto
+    restart: unless-stopped
+    ports:
+      - "${HTTP_PORT}:1883"
+    volumes:
+      - /path/to/mosquitto/config/mosquitto.conf:/mosquitto/config/mosquitto.conf:ro
+      - /path/to/mosquitto/config/passwords:/mosquitto/config/passwords:ro
+      - /path/to/mosquitto/config/acl:/mosquitto/config/acl:ro
+      - /path/to/mosquitto/data:/mosquitto/data
+      - /path/to/mosquitto/log:/mosquitto/log
+    networks:
+      - notifier-net
+
+networks:
+  notifier-net:
+    external: true