Add release helper script

README.md

@@ -50,6 +50,26 @@ docker compose up --build
 
 Open: http://127.0.0.1:5000
 
+## Release (git + docker)
+
+There is a helper script that:
+
+- updates `release.py` with the version
+- commits + pushes to git using the version as the commit message
+- builds + pushes Docker images tagged with the version (and optionally `latest`)
+
+Example:
+
+```bash
+python release_tool.py v1.0.2 --image git.alphen.cloud/bramval/rssfeedviewer --also-latest
+```
+
+Dry run (prints commands only):
+
+```bash
+python release_tool.py v1.0.2 --dry-run
+```
+
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