Add the commands for ubuntu install

01_04.md

@@ -1,25 +0,0 @@
-# Learning Jenkins, 01-04: Install Jenkins as a Container
-
-# Prerequisites
-You will need to have [Docker](https://docs.docker.com/get-docker/) installed on your local system.
-
-# Installation
-In a terminal, run the following commands:
-
-```
-docker --version
-
-docker pull jenkins/jenkins:lts
-
-docker run --detach --publish 8080:8080 --volume jenkins_home:/var/jenkins_home --name jenkins jenkins/jenkins:lts
-
-docker exec jenkins cat /var/jenkins_home/secrets/initialAdminPassword
-```
-
-# Using the Initial Admin Password
-Run the following command and copy the output:
-```
-docker exec jenkins cat /var/jenkins_home/secrets/initialAdminPassword
-```
-
-Open a browser to [localhost:8080](http://localhost:8080) and enter the initial admin password.

01_05.md

@@ -0,0 +1,23 @@
+# Learning Jenkins, 01-05: Install Jenkins on Ubuntu
+
+# Prerequisites
+You will need to have `root` permission on the target system, specifically so you can run commands using `sudo`.
+
+# Installation
+In a terminal, run the following commands:
+```
+wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -
+sudo sh -c 'echo deb https://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'
+sudo apt-get update -y
+sudo apt-get -y install openjdk-11-jdk
+sudo apt-get install jenkins
+cat /var/lib/jenkins/secrets/initialAdminPassword
+```
+
+# Using the Initial Admin Password
+Run the following command and copy the output:
+```
+cat /var/lib/jenkins/secrets/initialAdminPassword
+```
+
+Open a browser to [localhost:8080](http://localhost:8080) and enter the initial admin password.