Open-Source-Community · Jury1357 · Sep 15, 2026 · Sep 15, 2026 · Sep 15, 2026
diff --git a/sessions/Tracks/DevOps/README.md b/sessions/Tracks/DevOps/README.md
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+# ⚙️ DevOps
+
+This repository contains the materials and resources for the **DevOps track**.
+
+## 📚 Sessions
+
+### Session 1 — Introduction to DevOps
+
+* What is DevOps?
+* Problems DevOps solves
+* DevOps culture and practices
+* DevOps roles and career paths
+* Essential DevOps terminology
+* DevOps workflow and lifecycle
+* Containerization
+* GitHub Actions & CI/CD
+* Linux & DevOps
+* Introduction to Kubernetes
+
+📁 **[Session 1 Folder](./Tracks/DevOps/Session1/)**
+
+---
+
+### Session 2 — Docker Fundamentals
+
+* Virtual Machines vs Containers
+* Docker overview
+* Docker Images & Containers
+* Basic Docker commands
+* `docker run`
+* Image tags
+* Container Management
+* Interactive containers
+* `docker exec`
+* Hands-on practice
+
+📁 **[Session 2 Folder](./Tracks/DevOps/Session2/)**
+
+📝 **[Task](https://gist.github.com/221ee9b7f064f7ed4e4f0c132eec00eb.git)**
+
+---
+
+### Session 3 — Docker Advanced
+
+* Dockerfile
+* Building Docker images
+* Dockerfile Instructions
+* `CMD` vs `ENTRYPOINT`
+* Image layers
+* Docker Inspect
+* Environment variables
+* Port & volume mapping
+* Docker Networking
+* YAML basics
+* Docker Compose
+* Multi-container applications
+
+📁 **[Session 3 Folder](./Tracks/DevOps/Session3/)**
+
+📝 **[Task](https://gist.github.com/a42442c7d97233d8c0dfea0caba27dd5.git)**
+
+---
+
+### Session 4 — CI/CD & GitHub Actions
+
+* CI/CD concepts
+* Continuous Integration
+* Continuous Delivery / Deployment
+* GitHub Actions
+* Workflows, Jobs, Steps & Runners
+* Workflow triggers
+* YAML workflow 
+* Environment variables
+* Conditional execution
+* Job dependencies
+* Automated testing and deployment
+* NGINX
+* Reverse Proxy
+* Load Balancing
+* NGINX configuration
+* Application deployment
+
+📁 **[Session 4 Folder](./Tracks/DevOps/Session4/)**
+
+---
+
+## 🛠️ Technologies
+
+* Linux
+* Git & GitHub
+* Docker
+* Docker Compose
+* GitHub Actions
+* NGINX
+
diff --git a/...ackes/devops/session1/DevOps_Session1.pdf → ...racks/DevOps/Session1/DevOps_Session1.pdf b/...ackes/devops/session1/DevOps_Session1.pdf → ...racks/DevOps/Session1/DevOps_Session1.pdf
diff --git a/sessions/Tracks/DevOps/Session2/Docker-Session1-2026.pdf b/sessions/Tracks/DevOps/Session2/Docker-Session1-2026.pdf
diff --git a/sessions/Tracks/DevOps/Session3/Docker-Session-2.pdf b/sessions/Tracks/DevOps/Session3/Docker-Session-2.pdf
diff --git a/sessions/Tracks/DevOps/Session4/App/backend/Dockerfile b/sessions/Tracks/DevOps/Session4/App/backend/Dockerfile
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+FROM node:18-alpine
+
+WORKDIR /usr/src/app
+
+COPY package*.json ./
+RUN npm install --production
+
+COPY . .
+
+EXPOSE 3000
+CMD [ "npm", "start" ]
diff --git a/sessions/Tracks/DevOps/Session4/App/backend/package.json b/sessions/Tracks/DevOps/Session4/App/backend/package.json
@@ -0,0 +1,12 @@
+{
+  "name": "demo-backend",
+  "version": "1.0.0",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js"
+  },
+  "dependencies": {
+    "express": "^4.18.2",
+    "cors": "^2.8.5"
+  }
+}
diff --git a/sessions/Tracks/DevOps/Session4/App/backend/server.js b/sessions/Tracks/DevOps/Session4/App/backend/server.js
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+const express = require('express');
+const cors = require('cors');
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+app.use(cors());
+app.use(express.json());
+
+app.post('/api/greet', (req, res) => {
+    const name = req.body.name;
+    if (!name) {
+        return res.status(400).json({ error: 'Name is required' });
+    }
+
+    const greeting = `Hello, ${name}! Welcome to our CI/CD Demo.`;
+    res.json({ message: greeting });
+});
+
+app.listen(PORT, () => {
+    console.log(`Backend server running on port ${PORT}`);
+});
diff --git a/sessions/Tracks/DevOps/Session4/App/docker-compose.yml b/sessions/Tracks/DevOps/Session4/App/docker-compose.yml
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+services:
+  backend:
+    build: ./backend
+    expose:
+      - "3000"
+
+  frontend:
+    build: ./frontend
+    expose:
+      - "80"
+
+  nginx:
+    image: nginx:alpine
+    volumes:
+      - ./nginx/nginx.conf:/etc/nginx/conf.d/default.conf:ro
+    ports:
+      - "8080:80"
+    depends_on:
+      - frontend
+      - backend
diff --git a/sessions/Tracks/DevOps/Session4/App/frontend/Dockerfile b/sessions/Tracks/DevOps/Session4/App/frontend/Dockerfile
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+FROM nginx:alpine
+
+# Copy static frontend files to Nginx default html directory
+COPY index.html /usr/share/nginx/html/
+
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]
diff --git a/sessions/Tracks/DevOps/Session4/App/frontend/index.html b/sessions/Tracks/DevOps/Session4/App/frontend/index.html
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>CI/CD Demo App</title>
+    <style>
+        body {
+            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+            background-color: #f6f8fa;
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+        }
+        .container {
+            background-color: white;
+            padding: 40px;
+            border-radius: 8px;
+            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
+            text-align: center;
+            max-width: 400px;
+            width: 100%;
+        }
+        h1 { color: #24292f; margin-top: 0; }
+        input {
+            width: 100%;
+            padding: 10px;
+            margin-top: 15px;
+            border: 1px solid #d0d7de;
+            border-radius: 6px;
+            box-sizing: border-box;
+            font-size: 16px;
+        }
+        button {
+            width: 100%;
+            padding: 10px;
+            margin-top: 15px;
+            background-color: #2da44e;
+            color: white;
+            border: none;
+            border-radius: 6px;
+            font-size: 16px;
+            font-weight: bold;
+            cursor: pointer;
+        }
+        button:hover { background-color: #2c974b; }
+        #result {
+            margin-top: 20px;
+            font-size: 18px;
+            color: #0969da;
+            font-weight: 600;
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <h1>Welcome!</h1>
+        <p>Enter your name below to call the backend API.</p>
+        <input type="text" id="nameInput" placeholder="Your Name" />
+        <button onclick="greet()">Submit</button>
+        <div id="result"></div>
+    </div>
+
+    <script>
+        async function greet() {
+            const name = document.getElementById('nameInput').value;
+            const resultDiv = document.getElementById('result');
+
+            if (!name) {
+                resultDiv.textContent = "Please enter a name!";
+                resultDiv.style.color = "red";
+                return;
+            }
+
+            try {
+                // The edge Nginx proxy will route this to the backend container
+                const response = await fetch('/api/greet', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({ name: name })
+                });
+
+                const data = await response.json();
+                resultDiv.textContent = data.message;
+                resultDiv.style.color = "#0969da";
+            } catch (error) {
+                resultDiv.textContent = "Error connecting to backend API!";
+                resultDiv.style.color = "red";
+            }
+        }
+    </script>
+</body>
+</html>
diff --git a/sessions/Tracks/DevOps/Session4/App/nginx/nginx.conf b/sessions/Tracks/DevOps/Session4/App/nginx/nginx.conf
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+server {
+    listen 80 default_server;
+    server_name localhost;
+
+    location / {
+        proxy_pass http://frontend:80;
+    }
+
+    location /api/ {
+        proxy_pass http://backend:3000;
+    }
+}
diff --git a/sessions/Tracks/DevOps/Session4/attachments/.Rhistory b/sessions/Tracks/DevOps/Session4/attachments/.Rhistory
diff --git a/sessions/Tracks/DevOps/Session4/attachments/CICD_Pipleine.webp b/sessions/Tracks/DevOps/Session4/attachments/CICD_Pipleine.webp
diff --git a/sessions/Tracks/DevOps/Session4/attachments/development_deploy.jpg b/sessions/Tracks/DevOps/Session4/attachments/development_deploy.jpg