chore: update changelog for version 0.1.8 release (#145)

Author: veggerby

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.1.8] - 2026-04-11
+
 ### Added
 
 - **`open-webui` overlay** — Browser-based chat UI for Ollama and OpenAI-compatible LLM backends, running as a Docker Compose sidecar
@@ -531,7 +533,8 @@ This version was recalled due to a packaging issue (included `.tgz` tarball). Us
 
 <!-- Links -->
 
-[Unreleased]: https://github.com/veggerby/container-superposition/compare/v0.1.7...HEAD
+[Unreleased]: https://github.com/veggerby/container-superposition/compare/v0.1.8...HEAD
+[0.1.8]: https://github.com/veggerby/container-superposition/compare/v0.1.7...v0.1.8
 [0.1.7]: https://github.com/veggerby/container-superposition/compare/v0.1.6...v0.1.7
 [0.1.6]: https://github.com/veggerby/container-superposition/compare/v0.1.5...v0.1.6
 [0.1.5]: https://github.com/veggerby/container-superposition/compare/v0.1.4...v0.1.5