feat: add a deployable compose file with a socket proxy

.env.example

@@ -0,0 +1,12 @@
+CF_API_TOKEN=
+CF_ZONE_ID=
+DOMAIN=example.com
+TARGET=192.0.2.10
+RECORD_COMMENT=managed by traefik-cloudflare-dns
+DELETE_AFTER=1h
+# RECORD_TAGS=
+# PROXIED=false
+# TTL=1
+# RESYNC_INTERVAL=1m
+# DRY_RUN=false
+# LOG_LEVEL=info

README.md

@@ -23,6 +23,8 @@ A typical setup is one wildcard record (`*.example.com`) for your main server, p
 
 ## Quick start
 
+The repo's [`compose.yml`](compose.yml) is ready to deploy as is, for example as a Docker Compose app in Coolify on each server. Copy [`.env.example`](.env.example) to `.env` and fill in the four required values. The minimal form is:
+
 ```yaml
 services:
   traefik-cloudflare-dns:

compose.yml

@@ -0,0 +1,30 @@
+services:
+  traefik-cloudflare-dns:
+    image: ghcr.io/tiennm99/traefik-cloudflare-dns:edge
+    restart: unless-stopped
+    environment:
+      - CF_API_TOKEN=${CF_API_TOKEN:?CF_API_TOKEN is required}
+      - CF_ZONE_ID=${CF_ZONE_ID:?CF_ZONE_ID is required}
+      - DOMAIN=${DOMAIN:?DOMAIN is required}
+      - TARGET=${TARGET:?TARGET is required}
+      - DOCKER_HOST=tcp://dockerproxy:2375
+      - RECORD_COMMENT=${RECORD_COMMENT:-managed by traefik-cloudflare-dns}
+      - DELETE_AFTER=${DELETE_AFTER:-1h}
+      # - RECORD_TAGS=${RECORD_TAGS:-}
+      # - PROXIED=${PROXIED:-false}
+      # - TTL=${TTL:-1}
+      # - RESYNC_INTERVAL=${RESYNC_INTERVAL:-1m}
+      # - DRY_RUN=${DRY_RUN:-false}
+      # - LOG_LEVEL=${LOG_LEVEL:-info}
+    depends_on:
+      - dockerproxy
+
+  dockerproxy:
+    image: tecnativa/docker-socket-proxy:latest
+    restart: unless-stopped
+    environment:
+      - CONTAINERS=1
+    security_opt:
+      - no-new-privileges:true
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro