script for install jenkins

jenkins_install.sh

sudo apt install -y openjdk-8-jre
sudo update-alternatives --config java
wget -q -O - https://pkg.jenkins.io/debian/jenkins-ci.org.key | sudo apt-key add -
echo deb https://pkg.jenkins.io/debian-stable binary/ | sudo tee /etc/apt/sources.list.d/jenkins.list
sudo apt-get update
sudo apt-get install -y jenkins
sudo ufw allow 8080
sudo usermod -aG docker jenkins
sudo cat /var/lib/jenkins/secrets/initialAdminPassword
sudo systemctl start jenkins