Add project files

00_uebungs-files/01_docker-basics-php/Dockerfile

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+FROM php:8.1-cli
+
+# GD Extension installieren
+RUN apt-get update && apt-get install -y \
+    libfreetype6-dev \
+    libjpeg62-turbo-dev \
+    libpng-dev \
+    && docker-php-ext-configure gd --with-freetype --with-jpeg \
+    && docker-php-ext-install -j$(nproc) gd
+
+# PDO MySQL Extension installieren
+RUN docker-php-ext-install pdo pdo_mysql
+
+WORKDIR /app
+COPY ./src .
+
+# Entwicklungsserver starten
+CMD ["php", "-S", "0.0.0.0:8000"]

00_uebungs-files/01_docker-basics-php/docker-compose.yml

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+version: '3'
+
+services:
+  php-app:
+    build: .
+    ports:
+      - "8000:8000"
+    volumes:
+      - ./src:/app
+    environment:
+      DB_HOST: mysql-db
+      DB_USER: root
+      DB_PASSWORD: secret
+      DB_NAME: testdb
+    depends_on:
+      - mysql-db
+    networks:
+      - app-network
+
+  mysql-db:
+    image: mysql:8.0
+    environment:
+      MYSQL_ROOT_PASSWORD: secret
+      MYSQL_DATABASE: testdb
+    volumes:
+      - db-data:/var/lib/mysql
+    networks:
+      - app-network
+
+networks:
+  app-network:
+
+volumes:
+  db-data:

00_uebungs-files/01_docker-basics-php/src/db-test.php

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+<?php
+$host = getenv('DB_HOST') ?: 'mysql-db';
+$user = getenv('DB_USER') ?: 'root';
+$pass = getenv('DB_PASSWORD') ?: 'secret';
+$dbname = getenv('DB_NAME') ?: 'testdb';
+
+echo "<h1>Datenbank-Verbindungstest</h1>";
+echo "<p>Verbindungsversuch zu: $host</p>";
+
+try {
+    // Verbindung erstellen
+    $conn = new PDO("mysql:host=$host;dbname=$dbname", $user, $pass);
+    
+    // PDO-Fehlerbehandlung aktivieren
+    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+    
+    echo "<div style='color:green;'>Verbindung erfolgreich!</div>";
+    
+    // Prüfen, ob Testtabelle existiert, sonst erstellen
+    $stmt = $conn->query("SHOW TABLES LIKE 'test_table'");
+    if ($stmt->rowCount() == 0) {
+        $conn->exec("CREATE TABLE test_table (
+            id INT AUTO_INCREMENT PRIMARY KEY,
+            message VARCHAR(255),
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )");
+        $conn->exec("INSERT INTO test_table (message) VALUES ('Testdaten 1')");
+        $conn->exec("INSERT INTO test_table (message) VALUES ('Testdaten 2')");
+        echo "<p>Testtabelle erstellt und mit Daten gefüllt.</p>";
+    }
+    
+    // Daten auslesen
+    $stmt = $conn->query("SELECT * FROM test_table");
+    $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
+    
+    echo "<h2>Daten aus der Datenbank:</h2>";
+    echo "<table border='1'>";
+    echo "<tr><th>ID</th><th>Nachricht</th><th>Erstellt am</th></tr>";
+    
+    foreach ($rows as $row) {
+        echo "<tr>";
+        echo "<td>" . $row['id'] . "</td>";
+        echo "<td>" . $row['message'] . "</td>";
+        echo "<td>" . $row['created_at'] . "</td>";
+        echo "</tr>";
+    }
+    
+    echo "</table>";
+    
+} catch(PDOException $e) {
+    echo "<div style='color:red;'>Verbindungsfehler: " . $e->getMessage() . "</div>";
+}
+
+// Verbindung schließen
+$conn = null;
+?>
+
+<p>Seite geladen um: <?php echo date('H:i:s'); ?></p>
+<p><a href="index.php">Zurück zur Startseite</a></p>

00_uebungs-files/01_docker-basics-php/src/image-test.php

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+<?php
+// Test für GD Extension
+header('Content-Type: image/png');
+
+// Canvas erstellen (300x200px)
+$image = imagecreatetruecolor(300, 200);
+
+// Farben definieren
+$background = imagecolorallocate($image, 0, 153, 204);
+$text_color = imagecolorallocate($image, 255, 255, 255);
+$border_color = imagecolorallocate($image, 0, 0, 0);
+
+// Hintergrund füllen
+imagefill($image, 0, 0, $background);
+
+// Rahmen zeichnen
+imagerectangle($image, 0, 0, 299, 199, $border_color);
+
+// Text schreiben
+$text = "GD funktioniert!";
+imagestring($image, 5, 60, 80, $text, $text_color);
+
+// Zeit anzeigen
+$time = date('H:i:s');
+imagestring($image, 3, 100, 120, "Zeit: $time", $text_color);
+
+// Bild ausgeben
+imagepng($image);
+imagedestroy($image);

00_uebungs-files/01_docker-basics-php/src/index.php

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+<!DOCTYPE html>
+<html lang="de">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>PHP Docker Demo</title>
+</head>
+<body>
+    <h1>PHP Docker Demo</h1>
+    
+    <h2>PHP Info</h2>
+    <p>PHP Version: <?php echo phpversion(); ?></p>
+    
+    <h2>Tests</h2>
+    <ul>
+        <li><a href="image-test.php">GD Image Test</a> (benötigt GD Extension)</li>
+        <li><a href="db-test.php">Datenbank-Test</a> (benötigt MySQL/MariaDB Verbindung)</li>
+    </ul>
+    
+    <p>Diese Datei wurde geladen um: <?php echo date('H:i:s'); ?></p>
+</body>
+</html>

00_uebungs-files/02_docker-basics-react/.dockerignore

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+node_modules
+npm-debug.log
+build
+.git
+.github
+.gitignore
+README.md

00_uebungs-files/02_docker-basics-react/Dockerfile

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+# Build-Stage
+FROM node:16 AS build
+
+WORKDIR /app
+
+# Abhängigkeiten zuerst kopieren und installieren (für besseres Caching)
+COPY package*.json ./
+RUN npm install
+
+# Den Rest der Anwendung kopieren
+COPY . .
+
+# Build-Zeit-Variable setzen
+RUN echo "REACT_APP_BUILD_TIME=$(date)" > .env
+
+# Anwendung bauen
+RUN npm run build
+
+# Production-Stage
+FROM nginx:alpine
+
+# Build-Output vom build-Stage kopieren
+COPY --from=build /app/build /usr/share/nginx/html
+
+# Nginx-Konfiguration (optional)
+# COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]

00_uebungs-files/02_docker-basics-react/package.json

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+{
+  "name": "react-docker-demo",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0"
+  },
+  "devDependencies": {
+    "react-scripts": "5.0.1"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}

00_uebungs-files/02_docker-basics-react/public/index.html

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+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta name="description" content="React Docker Demo App" />
+    <title>React Docker Demo</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+  </body>
+</html>

00_uebungs-files/02_docker-basics-react/src/App.css

@@ -0,0 +1,42 @@
+.App {
+  text-align: center;
+}
+
+.App-header {
+  background-color: #282c34;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  font-size: calc(10px + 2vmin);
+  color: white;
+}
+
+.counter {
+  margin: 2rem 0;
+  padding: 1rem;
+  background-color: rgba(255, 255, 255, 0.1);
+  border-radius: 8px;
+}
+
+button {
+  background-color: #61dafb;
+  border: none;
+  color: #282c34;
+  padding: 10px 20px;
+  font-size: 16px;
+  border-radius: 4px;
+  cursor: pointer;
+  font-weight: bold;
+}
+
+button:hover {
+  background-color: #4fa8c3;
+}
+
+.info {
+  margin-top: 2rem;
+  font-size: 0.8rem;
+  opacity: 0.7;
+}

00_uebungs-files/02_docker-basics-react/src/App.js

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+import React, { useState } from 'react';
+import './App.css';
+
+function App() {
+  const [count, setCount] = useState(0);
+  
+  return (
+    <div className="App">
+      <header className="App-header">
+        <h1>React Docker Demo</h1>
+        <p>Diese App läuft in einem Docker-Container</p>
+        
+        <div className="counter">
+          <p>Du hast den Button {count} mal geklickt</p>
+          <button onClick={() => setCount(count + 1)}>
+            Klick mich!
+          </button>
+        </div>
+        
+        <p className="info">
+          Build-Zeit: {process.env.REACT_APP_BUILD_TIME || 'Unbekannt'}
+        </p>
+      </header>
+    </div>
+  );
+}
+
+export default App;

00_uebungs-files/02_docker-basics-react/src/index.css

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+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}

00_uebungs-files/02_docker-basics-react/src/index.js

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+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+
+const root = ReactDOM.createRoot(document.getElementById('root'));
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);

00_uebungs-files/03_docker-compose/docker-compose.override.yml

@@ -0,0 +1,26 @@
+version: '3'
+
+services:
+  nginx:
+    ports:
+      - "8080:80"
+    volumes:
+      - ./src:/var/www/html:delegated
+    environment:
+      - NGINX_HOST=localhost
+      - NGINX_PORT=80
+
+  php:
+    build:
+      context: ./docker/php
+      dockerfile: Dockerfile.dev
+    volumes:
+      - ./src:/var/www/html:delegated
+    environment:
+      - PHP_IDE_CONFIG=serverName=docker
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+
+  db:
+    ports:
+      - "3306:3306"

00_uebungs-files/03_docker-compose/docker-compose.yml

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+version: '3'
+
+services:
+  nginx:
+    image: nginx:alpine
+    ports:
+      - "8000:80"
+    volumes:
+      - ./src:/var/www/html
+      - ./docker/nginx/default.conf:/etc/nginx/conf.d/default.conf
+    depends_on:
+      - php
+    networks:
+      - frontend
+      - backend
+
+  php:
+    build:
+      context: ./docker/php
+      dockerfile: Dockerfile
+    volumes:
+      - ./src:/var/www/html
+    environment:
+      - DB_HOST=db
+      - DB_USER=root
+      - DB_PASS=secret
+      - DB_NAME=testdb
+    networks:
+      - backend
+    depends_on:
+      - db
+
+  db:
+    image: mysql:8.0
+    command: --default-authentication-plugin=mysql_native_password
+    environment:
+      - MYSQL_ROOT_PASSWORD=secret
+      - MYSQL_DATABASE=testdb
+    volumes:
+      - db_data:/var/lib/mysql
+    networks:
+      - backend
+
+networks:
+  frontend:
+  backend:
+    internal: true
+
+volumes:
+  db_data:

00_uebungs-files/03_docker-compose/docker/nginx/default.conf

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+server {
+    listen 80;
+    server_name localhost;
+    root /var/www/html;
+    index index.php index.html;
+
+    location / {
+        try_files $uri $uri/ /index.php?$query_string;
+    }
+    
+    location ~ \.php$ {
+        fastcgi_pass php:9000;
+        fastcgi_index index.php;
+        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+        include fastcgi_params;
+    }
+}

00_uebungs-files/03_docker-compose/docker/php/Dockerfile

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+FROM php:8.1-fpm
+
+# Abhängigkeiten installieren
+RUN apt-get update && apt-get install -y \
+    libfreetype6-dev \
+    libjpeg62-turbo-dev \
+    libpng-dev \
+    libzip-dev \
+    zip \
+    unzip
+
+# PHP Extensions installieren
+RUN docker-php-ext-configure gd --with-freetype --with-jpeg \
+    && docker-php-ext-install -j$(nproc) \
+    gd \
+    pdo \
+    pdo_mysql \
+    zip
+
+# OPCache für Produktion aktivieren
+RUN docker-php-ext-install opcache \
+    && docker-php-ext-enable opcache
+
+WORKDIR /var/www/html
+
+# Produktionskonfiguration nutzen
+RUN cp /usr/local/etc/php/php.ini-production /usr/local/etc/php/php.ini

00_uebungs-files/03_docker-compose/docker/php/Dockerfile.dev

@@ -0,0 +1,30 @@
+FROM php:8.1-fpm
+
+# Abhängigkeiten installieren
+RUN apt-get update && apt-get install -y \
+    libfreetype6-dev \
+    libjpeg62-turbo-dev \
+    libpng-dev \
+    libzip-dev \
+    zip \
+    unzip
+
+# PHP Extensions installieren
+RUN docker-php-ext-configure gd --with-freetype --with-jpeg \
+    && docker-php-ext-install -j$(nproc) \
+    gd \
+    pdo \
+    pdo_mysql \
+    zip
+
+# Development-Konfiguration nutzen
+RUN cp /usr/local/etc/php/php.ini-development /usr/local/etc/php/php.ini
+
+# Xdebug installieren
+RUN pecl install xdebug \
+    && docker-php-ext-enable xdebug
+
+# Xdebug-Konfiguration kopieren
+COPY xdebug.ini /usr/local/etc/php/conf.d/xdebug.ini
+
+WORKDIR /var/www/html

00_uebungs-files/03_docker-compose/docker/php/xdebug.ini

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+zend_extension=xdebug
+
+xdebug.mode=develop,debug
+xdebug.start_with_request=yes
+xdebug.client_host=host.docker.internal
+xdebug.client_port=9003
+xdebug.log=/var/log/xdebug.log

00_uebungs-files/03_docker-compose/src/db-test.php

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+<?php
+$host = getenv('DB_HOST') ?: 'db';
+$user = getenv('DB_USER') ?: 'root';
+$pass = getenv('DB_PASS') ?: 'secret';
+$dbname = getenv('DB_NAME') ?: 'testdb';
+
+echo "<h1>Datenbank-Verbindungstest</h1>";
+echo "<p>Verbindungsversuch zu: $host</p>";
+
+try {
+    // Verbindung erstellen
+    $conn = new PDO("mysql:host=$host;dbname=$dbname", $user, $pass);
+    
+    // PDO-Fehlerbehandlung aktivieren
+    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+    
+    echo "<div style='color:green;'>Verbindung erfolgreich!</div>";
+    
+    // Prüfen, ob Testtabelle existiert, sonst erstellen
+    $stmt = $conn->query("SHOW TABLES LIKE 'test_table'");
+    if ($stmt->rowCount() == 0) {
+        $conn->exec("CREATE TABLE test_table (
+            id INT AUTO_INCREMENT PRIMARY KEY,
+            message VARCHAR(255),
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )");
+        $conn->exec("INSERT INTO test_table (message) VALUES ('Testdaten 1')");
+        $conn->exec("INSERT INTO test_table (message) VALUES ('Testdaten 2')");
+        echo "<p>Testtabelle erstellt und mit Daten gefüllt.</p>";
+    }
+    
+    // Daten auslesen
+    $stmt = $conn->query("SELECT * FROM test_table");
+    $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
+    
+    echo "<h2>Daten aus der Datenbank:</h2>";
+    echo "<table border='1'>";
+    echo "<tr><th>ID</th><th>Nachricht</th><th>Erstellt am</th></tr>";
+    
+    foreach ($rows as $row) {
+        echo "<tr>";
+        echo "<td>" . $row['id'] . "</td>";
+        echo "<td>" . $row['message'] . "</td>";
+        echo "<td>" . $row['created_at'] . "</td>";
+        echo "</tr>";
+    }
+    
+    echo "</table>";
+    
+} catch(PDOException $e) {
+    echo "<div style='color:red;'>Verbindungsfehler: " . $e->getMessage() . "</div>";
+}
+
+// Verbindung schließen
+$conn = null;
+?>
+
+<p>Seite geladen um: <?php echo date('H:i:s'); ?></p>
+<p><a href="index.php">Zurück zur Startseite</a></p>

00_uebungs-files/03_docker-compose/src/image-test.php

@@ -0,0 +1,29 @@
+<?php
+// Test für GD Extension
+header('Content-Type: image/png');
+
+// Canvas erstellen (300x200px)
+$image = imagecreatetruecolor(300, 200);
+
+// Farben definieren
+$background = imagecolorallocate($image, 0, 153, 204);
+$text_color = imagecolorallocate($image, 255, 255, 255);
+$border_color = imagecolorallocate($image, 0, 0, 0);
+
+// Hintergrund füllen
+imagefill($image, 0, 0, $background);
+
+// Rahmen zeichnen
+imagerectangle($image, 0, 0, 299, 199, $border_color);
+
+// Text schreiben
+$text = "GD funktioniert!";
+imagestring($image, 5, 60, 80, $text, $text_color);
+
+// Zeit anzeigen
+$time = date('H:i:s');
+imagestring($image, 3, 100, 120, "Zeit: $time", $text_color);
+
+// Bild ausgeben
+imagepng($image);
+imagedestroy($image);

00_uebungs-files/03_docker-compose/src/index.php

@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html lang="de">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>PHP Docker Demo</title>
+    <style>
+        body { font-family: Arial, sans-serif; max-width: 800px; margin: 0 auto; padding: 20px; }
+        h1 { color: #0066cc; }
+        .info { background-color: #f0f0f0; padding: 15px; border-radius: 5px; }
+    </style>
+</head>
+<body>
+    <h1>PHP-FPM mit Nginx Docker Demo</h1>
+    
+    <div class="info">
+        <p>PHP Version: <?php echo phpversion(); ?></p>
+        <p>Server Software: <?php echo $_SERVER['SERVER_SOFTWARE']; ?></p>
+        <p>Ausgeführt von: <?php echo exec('whoami'); ?></p>
+        <p>Zeitstempel: <?php echo date('Y-m-d H:i:s'); ?></p>
+    </div>
+    
+    <h2>Extension Tests</h2>
+    <ul>
+        <li><a href="image-test.php">GD Image Test</a> (benötigt GD Extension)</li>
+        <li><a href="db-test.php">Datenbank-Test</a> (benötigt MySQL/MariaDB Verbindung)</li>
+    </ul>
+    
+    <h3>Installierte PHP Extensions:</h3>
+    <ul>
+        <?php foreach(get_loaded_extensions() as $ext): ?>
+            <li><?php echo $ext; ?></li>
+        <?php endforeach; ?>
+    </ul>
+</body>
+</html>

00_vortrags-files/Dockerfile

@@ -0,0 +1,20 @@
+FROM php:8.1-fpm
+WORKDIR /var/www/html
+
+COPY composer.json ./
+
+RUN apt-get update && apt-get install -y \
+    zip \
+    unzip \
+    && docker-php-ext-install pdo pdo_mysql
+
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+
+RUN composer install --no-scripts --no-autoloader
+
+COPY . .
+
+RUN composer dump-autoload --optimize
+
+EXPOSE 9000
+CMD ["php-fpm"]

00_vortrags-files/composer.json

@@ -0,0 +1,14 @@
+{
+    "name": "example/php-docker-demo",
+    "description": "Eine einfache PHP-Anwendung für Docker",
+    "type": "project",
+    "require": {
+        "php": ">=8.1",
+        "monolog/monolog": "^2.8"
+    },
+    "autoload": {
+        "psr-4": {
+            "App\\": "src/"
+        }
+    }
+}

00_vortrags-files/nginx.conf

@@ -0,0 +1,29 @@
+worker_processes  1;
+
+events {
+    worker_connections  1024;
+}
+
+http {
+    include       mime.types;
+    default_type  application/octet-stream;
+
+    sendfile        on;
+    keepalive_timeout  65;
+
+    server {
+        listen 9090;
+        server_name localhost;
+        root /var/www/html/public;
+        index index.php;
+
+        location ~ \.php$ {
+            fastcgi_pass 127.0.0.1:9000;
+            fastcgi_index index.php;
+            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+            include fastcgi_params;
+        }
+    }
+
+    include servers/*;
+}

00_vortrags-files/public/index.php

@@ -0,0 +1,69 @@
+<?php
+require __DIR__ . '/../vendor/autoload.php';
+
+use App\HelloWorld;
+use App\Database;
+use Monolog\Logger;
+use Monolog\Handler\StreamHandler;
+
+// Logger initialisieren
+$log = new Logger('app');
+$log->pushHandler(new StreamHandler('php://stdout', Logger::INFO));
+
+$log->info('Anwendung gestartet');
+
+// HelloWorld-Klasse verwenden
+$hello = new HelloWorld();
+$message = $hello->getMessage();
+
+// Datenbankverbindung testen
+$dbConfig = [
+    'host' => getenv('DB_HOST') ?: 'localhost',
+    'user' => getenv('DB_USER') ?: 'root',
+    'pass' => getenv('DB_PASS') ?: 'secret',
+    'name' => getenv('DB_NAME') ?: 'test'
+];
+
+$db = new Database($dbConfig);
+$dbStatus = $db->testConnection() ? 'erfolgreich' : 'fehlgeschlagen';
+
+?>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Docker PHP Demo</title>
+    <style>
+        body { font-family: Arial, sans-serif; margin: 40px; line-height: 1.6; }
+        .container { max-width: 800px; margin: 0 auto; }
+        .status { padding: 10px; margin: 10px 0; border-radius: 4px; }
+        .success { background-color: #d4edda; color: #155724; }
+        .error { background-color: #f8d7da; color: #721c24; }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <h1>PHP Docker Demo</h1>
+        <p>Dies ist eine einfache PHP-Anwendung für Docker-Demo.</p>
+        
+        <h2>Status</h2>
+        <div class="status success">
+            <p><?php echo $message; ?></p>
+        </div>
+        
+        <h2>Datenbankverbindung</h2>
+        <div class="status <?php echo $dbStatus === 'erfolgreich' ? 'success' : 'error'; ?>">
+            <p>Verbindung: <?php echo $dbStatus; ?></p>
+            <p>Host: <?php echo $dbConfig['host']; ?></p>
+        </div>
+        
+        <h2>PHP Info</h2>
+        <p>PHP Version: <?php echo phpversion(); ?></p>
+        <p>Loaded Extensions:</p>
+        <ul>
+            <?php foreach(get_loaded_extensions() as $ext): ?>
+                <li><?php echo $ext; ?></li>
+            <?php endforeach; ?>
+        </ul>
+    </div>
+</body>
+</html>

00_vortrags-files/src/Database.php

@@ -0,0 +1,41 @@
+<?php
+namespace App;
+
+class Database
+{
+    private array $config;
+    
+    public function __construct(array $config)
+    {
+        $this->config = $config;
+    }
+    
+    public function testConnection(): bool
+    {
+        try {
+            $dsn = sprintf(
+                'mysql:host=%s;dbname=%s',
+                $this->config['host'],
+                $this->config['name']
+            );
+            
+            $options = [
+                \PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION,
+                \PDO::ATTR_DEFAULT_FETCH_MODE => \PDO::FETCH_ASSOC,
+                \PDO::ATTR_TIMEOUT => 5,
+            ];
+            
+            $pdo = new \PDO(
+                $dsn,
+                $this->config['user'],
+                $this->config['pass'],
+                $options
+            );
+            
+            return true;
+        } catch (\PDOException $e) {
+            // In einer realen Anwendung würde hier geloggt werden
+            return false;
+        }
+    }
+}

00_vortrags-files/src/HelloWorld.php

@@ -0,0 +1,10 @@
+<?php
+namespace App;
+
+class HelloWorld
+{
+    public function getMessage(): string
+    {
+        return 'Hallo Welt! Die PHP-Anwendung läuft in Docker.';
+    }
+}

01 docker-basics.md

@@ -18,6 +18,12 @@
   docker search nginx
   ```
 
+### Offizielle Images mit Doku
+- [https://hub.docker.com/_/mysql](https://hub.docker.com/_/mysql)
+- [https://hub.docker.com/_/nginx](https://hub.docker.com/_/nginx)
+- [https://hub.docker.com/_/node](https://hub.docker.com/_/node)
+- [https://hub.docker.com/_/php](https://hub.docker.com/_/php)
+
 ### Images und Container
 - **Image**: Unveränderbare Vorlage
   ```bash
@@ -49,15 +55,22 @@
 ```dockerfile
 FROM php:8.1-fpm
 WORKDIR /var/www/html
-COPY composer.json composer.lock ./
+
+COPY composer.json ./
+
 RUN apt-get update && apt-get install -y \
     zip \
     unzip \
     && docker-php-ext-install pdo pdo_mysql
+
 RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+
 RUN composer install --no-scripts --no-autoloader
+
 COPY . .
+
 RUN composer dump-autoload --optimize
+
 EXPOSE 9000
 CMD ["php-fpm"]
 ```