Add reference documentation

config/ha-reference/node2/config/config.yml

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+# To see all available options, please visit the docs:
+# https://docs.pangolin.net/
+
+gerbil:
+    start_port: 51820
+    base_endpoint: "<THIS_NODE_EXTERNAL_IP>"
+    exit_node_name: "node2"
+
+app:
+    dashboard_url: "https://pangolin.example.com"
+    log_level: "info"
+
+postgres:
+    connection_string: postgresql://<POSTGRES_USERNAME>:<POSTGRES_PASSWORD>@<POSTGRES_INTERNAL_HOST>:5432/postgres
+
+traefik:
+    site_types: ["newt"] # Wireguard and local sites are not support in clustering
+    file_mode: true # Pangolin will generate and save yaml files in a shared volume
+
+server:
+    secret: "<SECRET>"
+    cors:
+        origins: ["https://pangolin.example.com"]
+        methods: ["GET", "POST", "PUT", "DELETE", "PATCH"]
+        allowed_headers: ["X-CSRF-Token", "Content-Type"]
+        credentials: false
+    maxmind_db_path: "./config/GeoLite2-Country.mmdb" # Make sure to download and place into the config dir
+    maxmind_asn_path: "./config/GeoLite2-ASN.mmdb"
+
+flags:
+    require_email_verification: false
+    disable_signup_without_invite: true
+    disable_user_create_org: false
+    allow_raw_resources: false
+    enable_acme_cert_sync: false
+    disable_local_sites: true 
+    disable_basic_wireguard_sites: true
+    disable_config_managed_domains: true

config/ha-reference/node2/config/privateConfig.yml

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+app:
+  region: "region1"
+  identity_provider_mode: "org"
+redis:
+  host: "<REDIS_INTERNAL_HOST>"
+  port: 6379
+flags:
+  enable_redis: true
+  use_pangolin_dns: true
+acme:
+  cert_mode: "pangolin"
+dns:
+  enabled: true
+  nameserver_name: "ns.example.com"
+  cname_extension: "cname.example.com"
+  site_extension: "site.example.com" # Optional

config/ha-reference/node2/config/traefik/traefik_config.yml

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+providers:
+  file:
+    directory: "/var/dynamic"
+    watch: true
+
+experimental:
+  plugins:
+    badger:
+      moduleName: "github.com/fosrl/badger"
+      version: "v1.7.0"
+
+log:
+  level: "INFO"
+  format: "common"
+  maxSize: 100
+  maxBackups: 3
+  maxAge: 3
+  compress: true
+
+entryPoints:
+  web:
+    address: ":80"
+  websecure:
+    address: ":443"
+    proxyProtocol: # Just accept everything for now!
+      trustedIPs:
+        - 0.0.0.0/0
+        - ::1/128
+    transport:
+      respondingTimeouts:
+        readTimeout: "30m"
+    http:
+      encodedCharacters:
+        allowEncodedSlash: true
+        allowEncodedQuestionMark: true
+
+serversTransport:
+  insecureSkipVerify: true
+
+ping:
+  entryPoint: "web"

config/ha-reference/node2/docker-compose.yml

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+name: pangolin
+services:
+  pangolin:
+    image: docker.io/fosrl/pangolin:ee-latest
+    container_name: pangolin
+    restart: unless-stopped
+    deploy:
+      resources:
+        limits:
+          memory: 2g
+        reservations:
+          memory: 512m
+    ports:
+      - 53:53/udp # DNS
+      - 3000:3000 # Pangolin UI
+    volumes:
+      - ./config:/app/config
+      - ./config/certificates:/var/certificates
+      - ./config/dynamic:/var/dynamic
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3001/api/v1/"]
+      interval: "10s"
+      timeout: "10s"
+      retries: 15
+
+  gerbil:
+    image: docker.io/fosrl/gerbil:latest
+    container_name: gerbil
+    restart: unless-stopped
+    depends_on:
+      pangolin:
+        condition: service_healthy
+    command:
+      - --reachableAt=http://<NODE1_INTERNAL_IP>:3004
+      - --generateAndSaveKeyTo=/var/config/key
+      - --remoteConfig=http://pangolin:3001/api/v1/
+      - --trusted-upstreams=<NODE1_EXTERNAL_IP>,<NODE2_EXTERNAL_IP>
+    volumes:
+      - ./config/:/var/config
+    cap_add:
+      - NET_ADMIN
+      - SYS_MODULE
+    ports:
+      - 51820:51820/udp # wireguard
+      - 21820:21820/udp # relay
+      - 443:8443 # resources
+      - 80:80 # web
+      - 3004:3004 # gerbil api
+
+  traefik:
+    image: docker.io/traefik:v3.7.11
+    container_name: traefik
+    restart: unless-stopped
+    network_mode: service:gerbil # Ports appear on the gerbil service
+    depends_on:
+      pangolin:
+        condition: service_healthy
+    command:
+      - --configFile=/etc/traefik/traefik_config.yml
+    volumes:
+      - ./config/traefik:/etc/traefik:ro
+      - ./config/traefik/logs:/var/log/traefik
+      - ./config/certificates:/var/certificates:ro
+      - ./config/dynamic:/var/dynamic:ro
+
+networks:
+  default:
+    driver: bridge
+    name: pangolin