Add dockerfile and update config file

SIG_spbu/Dockerfile

@@ -0,0 +1,12 @@
+FROM php:8.2-apache
+
+RUN docker-php-ext-install mysqli && docker-php-ext-enable mysqli
+
+RUN a2enmod rewrite
+
+COPY . /var/www/html/
+
+RUN chown -R www-data:www-data /var/www/html \
+    && chmod -R 755 /var/www/html
+
+EXPOSE 80

SIG_spbu/config.php

@@ -0,0 +1,11 @@
+<?php
+define('DB_HOST', getenv('DB_HOST'));
+define('DB_USER', getenv('DB_USER'));
+define('DB_PASS', getenv('DB_PASS'));
+define('DB_NAME', getenv('DB_NAME'));
+
+$conn = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
+if ($conn->connect_error) {
+    die("Koneksi gagal: " . $conn->connect_error);
+}
+?>

SIG_spbu/db.php

@@ -1,7 +1,3 @@
 <?php
-$conn = new mysqli("localhost", "root", "", "webgis");
-
-if ($conn->connect_error) {
-    die("Koneksi gagal: " . $conn->connect_error);
-}
+require_once 'config.php';
 ?>