doc: expand jenkinsfile docs
@@ -146,8 +146,13 @@ phrases:
* jenkins build [source-package-test](https://build.libelektra.org/job/elektra-source-package-test/) please
* jenkins build [homepage](https://build.libelektra.org/job/elektra-homepage/) please
* jenkins build [jenkinsfile](https://build.libelektra.org/jenkins/job/elektra-jenkinsfile/)[REGEX] please
- * Use the optional `REGEX` field to specify which stages you want to run
- The REGEX has to match the stagename.
+ * Use the optional `[REGEX]` field to specify which stages you want to run
+ The default is to run all stages.
+ Docker build phase stages will always be run.
+ Running a partial build will degrade the build result to unstable which is
+ displayed as failed in the github status.
+ Example: `jenkins build jenkinsfile[.*-fast] please` will run all stages
+ ending with `-fast`.
### Run All Tests
