Refactor Minecraft server setup and remove deprecated files

- Updated `compose.yaml` for Minecraft server to correct port mapping and environment variables.
- Deleted obsolete `docker-compose.yaml` for Minecraft server.
- Removed unused K-Pop web server files including `compose.yaml` and `index.html`.
- Added a new Dockerfile for a Hello World Rust application using multi-stage builds.
- Created a README for K-Pop server quest with instructions for setting up a web server.
- Added `index.html` for K-Pop server showcasing rivalry between BTS and Blackpink.
- Established a local development environment Dockerfile with essential tools and dependencies.
- Implemented a Caddy-based web server for K-Pop content with Docker Compose configuration.

Author: RealVishy

.github/workflows/docker-build-and-push.yml

@@ -23,17 +23,32 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Docker meta
-        id: meta
+      - name: Docker meta - Demo
+        id: meta-demo
         uses: docker/metadata-action@v4
         with:
-          images: ghcr.io/${{ github.repository }}
+          images: ghcr.io/${{ github.repository }}/demo
           tags: latest
 
-      - name: Build and push Docker image
+      - name: Build and push Demo Docker image
         uses: docker/build-push-action@v6
         with:
           context: "./demo"
           file: "./demo/Dockerfile.production"
           push: true
-          tags: ${{ steps.meta.outputs.tags }}
+          tags: ${{ steps.meta-demo.outputs.tags }}
+
+      - name: Docker meta - K-pop Demon Server
+        id: meta-kpop
+        uses: docker/metadata-action@v4
+        with:
+          images: ghcr.io/${{ github.repository }}/kpop-web-server
+          tags: latest
+
+      - name: Build and push K-pop Web Server Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: "./quests/solutions/kpop-web-server"
+          file: "./quests/solutions/kpop-web-server/Dockerfile"
+          push: true
+          tags: ${{ steps.meta-kpop.outputs.tags }}

demo/src/main.rs

@@ -1,3 +1,50 @@
+use std::io;
+
+fn is_leap_year(year: i32) -> bool {
+    // A year is a leap year if:
+    // 1. It's divisible by 4 AND not divisible by 100
+    // OR
+    // 2. It's divisible by 400
+    (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)
+}
+
 fn main() {
-    println!("Hello, Docker!");
+    println!("🗓️  Leap Year Checker 🗓️");
+    println!("========================");
+    
+    loop {
+        println!("\nEnter a year (or 'q' to quit):");
+        print!("> ");
+        
+        let mut input = String::new();
+        io::stdin()
+            .read_line(&mut input)
+            .expect("Failed to read line");
+        
+        let input = input.trim();
+        
+        // Check if user wants to quit
+        if input.to_lowercase() == "q" || input.to_lowercase() == "quit" {
+            println!("👋 Goodbye!");
+            break;
+        }
+        
+        // Parse the year
+        let year: i32 = match input.parse() {
+            Ok(num) => num,
+            Err(_) => {
+                println!("❌ Invalid input! Please enter a valid year.");
+                continue;
+            }
+        };
+        
+        // Check if it's a leap year
+        if is_leap_year(year) {
+            println!("✅ {} is a LEAP YEAR! 🎉", year);
+            println!("   It has 366 days (February has 29 days).");
+        } else {
+            println!("❌ {} is NOT a leap year.", year);
+            println!("   It has 365 days (February has 28 days).");
+        }
+    }
 }

quests/hello-docker/Dockerfile

@@ -0,0 +1,8 @@
+# Write a sample dockerfile to run this Hello World Rust application
+# The application is a simple command line program that prints "Hello, Docker!" to the console
+# Use multi-stage builds to keep the final image small
+
+
+# Look at demo/Dockerfile.production for reference
+
+FROM rust:latest AS builder

quests/kpop-web-server/README.md

@@ -0,0 +1,3 @@
+# K-Pop Server Quest
+
+In this quest, you'll write a Dockerfile and Docker Compose to setup a K-Pop Web Server. You can use any web server image of your choice (e.g., Nginx, Apache) and create a simple HTML page that showcases the rivalry between BTS and Blackpink.

…s/solutions/kpop-demon-server/index.html quests/kpop-web-server/index.htmlquests/solutions/kpop-demon-server/index.html renamed to quests/kpop-web-server/index.html quests/solutions/kpop-demon-server/index.html renamed to quests/kpop-web-server/index.html

@@ -0,0 +1 @@
+FROM scratch

quests/local-dev-env/Dockerfile

@@ -0,0 +1,3 @@
+# Local Development Environment Quest
+
+In this quest, you'll create a Dockerfile to set up a local development environment for a specific application. The goal is to create a lightweight and efficient Docker image that can be used for development purposes with all necessary tools and dependencies installed.

quests/local-dev-env/README.md

@@ -2,15 +2,15 @@
 # This file defines how to run the Minecraft server container
 
 services:  # List of services (containers) to run
-  mc:  # Name of the service - you can reference it with 'docker compose logs mc'
-    image: itzg/minecraft-server  # The Docker image to use from Docker Hub
-    tty: true  # Allocate a pseudo-TTY (allows interactive terminal)
-    stdin_open: true  # Keep STDIN open (allows you to type server commands)
-    ports:  # Maps ports from host machine to container
+  mc:
+    image: itzg/minecraft-server
+    tty: true
+    stdin_open: true
+    ports:
       - "25565:25566"  # Format: "host_port:container_port"
     environment:  # Environment variables passed to the container
-      EULA: "FALSE"  # Must be TRUE to accept Minecraft EULA
-      TYPE: "VANILLA"  # The type of Minecraft server (VANILLA, PAPER, FORGE, etc.)
+      EULA: "FALSE"
+      TYPE: "VANILLA"
     volumes:  # Mount directories from host to container to persist data
       - ./data:/data  # Stores world data, plugins, configs in ./data folder