Upgrade Jenkins, Python, JDK (#8)

* upgrade: Upgrade to python 3.11, Jenkins to 2.401.2 and agent to 4.14
* upgrade: Upgrade JDK version to 17
* upgrade: Update docs

Dockerfile.template

@@ -1,4 +1,4 @@
-FROM balenalib/%%BALENA_MACHINE_NAME%%-python:3.10-buster-run
+FROM balenalib/%%BALENA_MACHINE_NAME%%-python:3.11-bookworm-run
 
 # Install base packages
 RUN install_packages \
@@ -7,7 +7,7 @@ RUN install_packages \
     curl \
     git \
     jq \
-    openjdk-11-jre-headless \
+    openjdk-17-jre-headless \
     openssh-server \
     vim \
     wget \
@@ -27,8 +27,8 @@ COPY . ./
 ENV UDEV=1
 
 ENV JENKINS_HOME=/data/jenkins/
-ENV JENKINS_VERSION=2.319.3
-ENV AGENT_VERSION=4.9
+ENV JENKINS_VERSION=2.401.2
+ENV AGENT_VERSION=4.14
 
 RUN mkdir -p /data/jenkins
 RUN wget -q https://get.jenkins.io/war-stable/${JENKINS_VERSION}/jenkins.war

README.md

@@ -1,25 +1,32 @@
 ![GitHub Actions](https://github.com/kwmlodozeniec/balena-jenkins/workflows/Docker%20Image%20CI/badge.svg)
 
-This is a basic Jenkins image with Python 3.7 and OpenJRE 11 preinstalled.
+This is a basic Jenkins image with Python 3.11 and OpenJRE 17 preinstalled.
 The device can run either as an agent or as a Jenkins master.
 Click on the button below for a one click install on your Balena dashboard.
 
 [![balena deploy button](https://www.balena.io/deploy.svg)](https://dashboard.balena-cloud.com/deploy?repoUrl=https://github.com/kwmlodozeniec/balena-jenkins)
+
 # 🚨 Default SSH username and password
+
 This image has a default user name and password configured in the Dockerfile. Please ensure this has been changed prior to using this image in any setting as it will be very insecure!
 
 # ℹ️ Agent Configuraton
+
 The following configuration variables need to be set on FLEET level:
-* MASTER_IP
-* MASTER_PORT
-* SLAVE_WORK_DIR
+
+-   MASTER_IP
+-   MASTER_PORT
+-   SLAVE_WORK_DIR
 
 The following configuration variables need to be set on DEVICE level:
-* MASTER_SECRET
-* SLAVE_NAME
+
+-   MASTER_SECRET
+-   SLAVE_NAME
 
 # ℹ️ Master Configuration
+
 The following configuration variable needs to be set on DEVICE level:
-* RUN_MASTER (it can be set to any non empty value)
+
+-   RUN_MASTER (it can be set to any non empty value)
 
 By default JENKINS_HOME is set to /data/jenkins directory as this is the data partition which persists between updates.

balena.yml

@@ -1,6 +1,6 @@
 name: "Jenkins"
 type: "sw.application"
-description: "Build a Jenkins image with Python 3.7 and OpenJRE 11 preinstalled"
+description: "Build a Jenkins image with Python 3.11 and OpenJRE 17 preinstalled"
 joinable: false
 assets:
   repository: