Standardize all compose files to .yml extension

pihole/docker-compose.yml

@@ -0,0 +1,30 @@
+version: "3.8"  # Modern version (original was 3.6, safe to bump)
+
+services:
+  pihole:
+    container_name: pihole
+    image: pihole/pihole:latest
+    restart: unless-stopped
+    hostname: pihole  # Cleaner than the random container ID
+    environment:
+      TZ: America/New_York                  # Proper IANA format (was "New York")
+      FTLCONF_webserver_api_password: "~Guards1345"
+      FTLCONF_dns_listeningMode: ALL
+      FTL_CMD: no-daemon
+      DNSMASQ_USER: pihole
+    ports:
+      - "53:53/tcp"
+      - "53:53/udp"
+      - "8080:80/tcp"     # HTTP admin
+      - "8443:443/tcp"    # HTTPS admin
+    volumes:
+      - "/data/compose/5/etc-pihole:/etc/pihole:rw"   # Keep this — confirmed by inspect
+      # Add this second volume if you have custom dnsmasq configs (very common for Pi-hole)
+      # - "/data/compose/5/etc-dnsmasq.d:/etc/dnsmasq.d:rw"
+    networks:
+      - pihole_default
+
+networks:
+  pihole_default:
+    name: pihole_default
+    external: true