Merge branch 'master' into alpine

# Conflicts:
#	Dockerfile

Dockerfile

@@ -20,9 +20,9 @@
 #  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 #  THE SOFTWARE.
 
-FROM jenkins/slave:alpine
+FROM jenkins/slave:3.29-2-alpine
 MAINTAINER Oleg Nenashev <o.v.nenashev@gmail.com>
-LABEL Description="This is a base image, which allows connecting Jenkins agents via JNLP protocols" Vendor="Jenkins project" Version="3.27"
+LABEL Description="This is a base image, which allows connecting Jenkins agents via JNLP protocols" Vendor="Jenkins project" Version="3.29"
 
 COPY jenkins-slave /usr/local/bin/jenkins-slave
 

Jenkinsfile

@@ -0,0 +1,29 @@
+/* NOTE: this Pipeline mainly aims at catching mistakes (wrongly formed Dockerfile, etc.)
+ * This Pipeline is *not* used for actual image publishing.
+ * This is currently handled through Automated Builds using standard Docker Hub feature
+*/
+pipeline {
+    agent { label 'linux' }
+
+    options {
+        timeout(time: 2, unit: 'MINUTES')
+        buildDiscarder(logRotator(daysToKeepStr: '10'))
+        timestamps()
+    }
+
+    triggers {
+        pollSCM('H/24 * * * *') // once a day in case some hooks are missed
+    }
+
+    stages {
+        stage('Build Docker Image') {
+            steps {
+                deleteDir()
+                checkout scm
+                sh 'make build'
+            }
+        }
+    }
+}
+
+// vim: ft=groovy

Makefile

@@ -0,0 +1,5 @@
+ROOT:=$(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
+IMAGE_NAME:=jenkins4eval/jnlp-slave:test
+
+build:
+	docker build -t ${IMAGE_NAME} .