This repository contains step-by-step scripts and instructions to install various DevOps tools on a Linux system (mainly Ubuntu-based). Each section contains a Bash script and usage guidance.
nano install-docker.sh
#!/bin/bash
set -e
echo "🚀 Updating system..."
sudo apt-get update -y
sudo apt-get upgrade -y
echo "🐳 Installing Docker dependencies..."
sudo apt-get install -y \
ca-certificates \
curl \
gnupg \
lsb-release
echo "🔐 Adding Docker GPG key..."
sudo mkdir -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | \
sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
echo "📦 Setting up Docker repository..."
echo \
"deb [arch=$(dpkg --print-architecture) \
signed-by=/etc/apt/keyrings/docker.gpg] \
https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) stable" | \
sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
echo "🔄 Updating apt cache..."
sudo apt-get update -y
echo "📥 Installing Docker Engine and Docker Compose plugin..."
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
echo "✅ Enabling and starting Docker service..."
sudo systemctl enable docker
sudo systemctl start docker
echo "👤 Adding current user to docker group (you may need to log out and back in)..."
sudo usermod -aG docker $USER
echo "🎉 Docker and Docker Compose installation complete!"
docker --version
docker compose version
Make it executable then run
chmod +x filename
Run the script:
./install-docker.sh
sudo apt install wget apt-transport-https gnupg lsb-release -y
wget -qO - https://aquasecurity.github.io/trivy-repo/deb/public.key | sudo apt-key add -
echo "deb https://aquasecurity.github.io/trivy-repo/deb $(lsb_release -sc) main" | sudo tee -a /etc/apt/sources.list.d/trivy.list
sudo apt update && sudo apt install trivy -y
✅ Scan Example:
trivy image nginx:latest
so first install java
sudo apt update
sudo apt install fontconfig openjdk-21-jre
java -version
and install jenkins
sudo wget -O /etc/apt/keyrings/jenkins-keyring.asc \
https://pkg.jenkins.io/debian-stable/jenkins.io-2023.key
echo "deb [signed-by=/etc/apt/keyrings/jenkins-keyring.asc]" \
https://pkg.jenkins.io/debian-stable binary/ | sudo tee \
/etc/apt/sources.list.d/jenkins.list > /dev/null
sudo apt-get update
sudo apt-get install jenkins
to run jenkins so run command :
sudo systemctl enable jenkins
docker run -d --name sonarqube -p 9000:9000 -p 9092:9092 -e SONAR_ES_BOOTSTRAP_CHECKS_DISABLE=true -v sonarqube_data:/opt/sonarqube/data -v sonarqube_extensions:/opt/sonarqube/extensions -v sonarqube_logs:/opt/ssonarqube/logs sonarqube:latest
- sonarqube scanner
- Sonar quality gate
- Docker
✅ Prerequisites:
- Jenkins already installed and running
- SonarQube running
- Internet access to install plugins
Open SonarQube in browser → http://100.24.23.144:9000
Login as admin
Click on your profile icon → My Account
Go to Security tab
Under Generate Tokens:
Name: jenkins-token
Click Generate
Copy the token somewhere safe
✅ This token will be used in Jenkins to connect to SonarQube.
##🔧 Step 2: Add SonarQube Token to Jenkins
Go to: Manage Jenkins > Manage Credentials
Select: (global) > Add Credentials
Select:
Kind: Secret text
Secret: Paste your SonarQube token
ID: sonar-token
Description: SonarQube Token for Jenkins
✅ This saves your token securely.
Go to: Manage Jenkins > Configure System
Scroll to SonarQube servers
Click Add SonarQube
Fill:
Name: SonarQube
Server URL: jenkinsserevr IP:8080
Server Authentication Token:
Click Add → Kind: Secret text → Choose sonar-token
✅ Tick: "Enable injection of SonarQube server configuration..."
Click Save.
Go to: Manage Jenkins > Global Tool Configuration
Scroll to SonarQube Scanner
Click Add SonarQube Scanner
Fill:
Name: SonarScanner
✅ Check: Install automatically
Click Save