doc: 📝 document example of an docker-compose.yml file

CHANGELOG.md

@@ -1,10 +1,12 @@
 # Changelog
 
 
-## (unreleased)
+## 0.1.0 (2021-04-22)
 
 ### New
 
+* :sparkles: add Dockerfile. [Eduard Veit]
+
 * :sparkles: add loop mode. [Eduard Veit]
 
 * :sparkles: add support for Duck DNS as DynDNS2 provider. [Eduard Veit]
@@ -35,6 +37,8 @@
 
 ### Documentation
 
+* :memo: document example of an docker-compose.yml file. [Eduard Veit]
+
 * :memo: document loop mode and dig as requirement. [Eduard Veit]
 
 * :memo: update example of .env in README.md. [Eduard Veit]