refactor: update photo gallery and reduce image count

- Reduced the number of photos displayed from 68 to 33 in the photo gallery.
- Removed unused photo files (photos 34 to 68) from the public directory.
- Updated Docker configuration for better environment management and container naming.
- Upgraded Next.js and ESLint dependencies to their latest versions.
- Added ESLint configuration file for improved code quality checks.
- Introduced a .dockerignore file to exclude unnecessary files from the Docker context.
- Added an example .env file for environment variable configuration.

Co-authored-by: Copilot <copilot@github.com>

eslint.config.js

@@ -0,0 +1,46 @@
+import js from "@eslint/js";
+import next from "eslint-config-next";
+import tseslint from "typescript-eslint";
+
+const config = [
+  // Base JavaScript recommended rules
+  js.configs.recommended,
+
+  // TypeScript recommended rules
+  ...tseslint.configs.recommended,
+
+  // Next.js recommended rules
+  ...next,
+
+  {
+    rules: {
+      // ===== Code quality =====
+      "no-console": "warn",
+      "prefer-const": "error",
+      eqeqeq: ["error", "always"],
+      curly: ["error", "all"],
+
+      // ===== TypeScript =====
+      "@typescript-eslint/no-unused-vars": ["warn"],
+
+      // ===== React / Next =====
+      "react-hooks/exhaustive-deps": "warn",
+      "react/react-in-jsx-scope": "off",
+
+      // ===== Style =====
+      semi: ["error", "always"],
+      quotes: ["error", "double"],
+    },
+  },
+
+  {
+    ignores: [
+      "node_modules",
+      ".next",
+      "dist",
+      "out",
+    ],
+  },
+];
+
+export default config;