ci: test Moodle 4.5 LTS

README.md

@@ -10,7 +10,13 @@ The `develop` branch is unreleased modernization work toward `6.0.0` and is not
 
 ## Current CI baseline
 
-Gitea Actions currently tests Moodle `5.2.2` on PHP `8.4` with PostgreSQL `16` and MySQL `8.4`. This is a development baseline, not the final support matrix.
+Gitea Actions currently runs three blocking compatibility checks:
+
+- Moodle `5.2.2` on PHP `8.4` with PostgreSQL `16`;
+- Moodle `5.2.2` on PHP `8.4` with MySQL `8.4`;
+- Moodle `4.5.13` LTS on PHP `8.1.34` with PostgreSQL `16`.
+
+This is an incremental development baseline, not the final support matrix.
 
 Run the same checks from the repository root with Docker:
 
@@ -32,6 +38,15 @@ docker compose --profile mysql up --abort-on-container-exit --exit-code-from ci-
 docker compose --profile mysql down --volumes --remove-orphans --rmi local
 ```
 
+Moodle 4.5 LTS with PostgreSQL:
+
+```bash
+export COMPOSE_PROJECT_NAME=local_webhooks_local_moodle45_postgresql
+docker compose --profile moodle45 build --pull ci-moodle45
+docker compose --profile moodle45 up --abort-on-container-exit --exit-code-from ci-moodle45 ci-moodle45
+docker compose --profile moodle45 down --volumes --remove-orphans --rmi local
+```
+
 ## License
 
 [GNU GPLv3](LICENSE.txt). Copyright (c) [Valentin Popov](mailto:info@valentineus.link).