Update changelog

Author: ja573

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to thoth will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [[0.2.2]](https://github.com/thoth-pub/thoth/releases/tag/v0.2.2) - 2020-11-03
+### Changed
+  - Set `THOTH_API` on build via docker
+
 ## [[0.2.1]](https://github.com/thoth-pub/thoth/releases/tag/v0.2.1) - 2020-11-02
 ### Changed
   - Redirect to relevant routes upon save and create actions in APP