Add initial dnsmasq configuration and docker-compose setup

dnsmasq.conf

@@ -0,0 +1,5 @@
+# Resuelve cualquier subdominio de misitio.local a 10.8.0.6
+address=/.misitio.local/10.8.0.6
+
+# Reenvía todo lo demás a Cloudflare
+server=1.1.1.1

docker-compose.yml

@@ -0,0 +1,11 @@
+# docker-compose.yml
+services:
+  dnsmasq:
+    image: jpillora/dnsmasq:latest
+    container_name: dnsmasq
+    ports:
+      - "53:53/udp"
+      - "53:53/tcp"
+    volumes:
+      - ./dnsmasq.conf:/etc/dnsmasq.conf:ro
+    restart: unless-stopped