add Docker build frontend

frontend/src/main.js

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+import 'reset-css';
+import './global.css';
+import './scripts/header.js';
+import './styles/layout/container.css';
+import './styles/layout/footer.css';
+import './styles/layout/header/header.css';
+
+import './styles/layout/container.css';
+import './styles/layout/footer.css';
+
+import './styles/components/advert-item.css';
+import './styles/components/article-item.css';
+import './styles/components/article-single.css';
+import './styles/components/contacts.css';
+import './styles/components/event-item.css';
+import './styles/components/interview-item.css';
+import './styles/components/partner-item.css';
+import './styles/components/single-partner-item.css';
+import './styles/components/suggestion-item.css';
+
+import './scripts/calendar.js';
+import './scripts/menu-vertical.js';
+import './scripts/modal.js';
+import './scripts/scroll-to-top.js';
+import './scripts/search-form.js';
+import './scripts/select.js';
+import './scripts/subscription-form.js';
+import './styles/components/about.css';
+import './styles/components/banner.css';
+import './styles/components/breadcrumbs.css';
+import './styles/components/button.css';
+import './styles/components/calendar.css';
+import './styles/components/checkbox.css';
+import './styles/components/error-page.css';
+import './styles/components/event-item.css';
+import './styles/components/fonts.css';
+import './styles/components/hero.css';
+import './styles/components/input.css';
+import './styles/components/menu-vertical.css';
+import './styles/components/menu.css';
+import './styles/components/modal.css';
+import './styles/components/most-read.css';
+import './styles/components/nav.css';
+import './styles/components/pagination.css';
+import './styles/components/search-form.css';
+import './styles/components/section-title.css';
+import './styles/components/select.css';
+import './styles/components/shared.css';
+import './styles/components/socials.css';
+import './styles/components/subscribe-form.css';
+import './styles/components/subscription-form.css';
+import './styles/components/tag.css';
+import './styles/components/to-top.css';
+import './styles/components/upcoming-events.css';
+
+import { initCalendar } from './scripts/calendar.js';
+import { initMenuVertical } from './scripts/menu-vertical.js';
+import { initModal } from './scripts/modal.js';
+import { initScrollToTop } from './scripts/scroll-to-top.js';
+
+import { initHeader } from './scripts/header.js';
+import { initSearchForm } from './scripts/search-form.js';
+import { initSelect } from './scripts/select.js';
+import { initSubscriptionForm } from './scripts/subscription-form.js';
+import './styles/pages/main.css';
+
+document.addEventListener('DOMContentLoaded', function () {
+  initCalendar();
+  initMenuVertical();
+  initModal();
+  initScrollToTop();
+  initSearchForm();
+  initSelect();
+  initSubscriptionForm();
+  initHeader();
+});

frontend/src/scripts/header.js

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+export const initHeader = () => {
+  const headerBurger = document.querySelector('.header__burger');
+  const mobileHeader = document.querySelector('.header-mobile');
+
+  if (headerBurger && mobileHeader) {
+    headerBurger.addEventListener('click', () => {
+      mobileHeader.classList.toggle('is-active');
+      headerBurger.classList.toggle('is-active');
+    });
+  }
+};

frontend/src/scripts/menu-vertical.js

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+export const initMenuVertical = () => {
+  const menuVerticalHead = document.querySelector(
+    '.mobile .menu-vertical__head'
+  );
+  const menuVerticalInner = document.querySelector(
+    '.mobile .menu-vertical__inner'
+  );
+  if (menuVerticalHead && menuVerticalInner) {
+    menuVerticalHead.addEventListener('click', () => {
+      menuVerticalHead.classList.toggle('is-active');
+      menuVerticalInner.classList.toggle('is-active');
+    });
+  }
+};

frontend/src/scripts/modal.js

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+export const initModal = () => {
+  const modalCloses = document.querySelectorAll('.modal__close');
+
+  if (modalCloses.length) {
+    modalCloses.forEach(function (modalClose) {
+      modalClose.addEventListener('click', function (event) {
+        event.preventDefault();
+        const modal = this.closest('.modal-overlay');
+        modal.style.display = 'none';
+      });
+    });
+  }
+};

frontend/src/scripts/search-form.js

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+export const initSearchForm = () => {
+  const searchFormInput = document.querySelector('.search-form__input');
+  const searchFormClearButton = document.querySelector('.search-form__clear');
+
+  if (searchFormInput && searchFormClearButton) {
+    searchFormClearButton.addEventListener('click', () => {
+      searchFormInput.value = '';
+    });
+  }
+};

frontend/src/scripts/select.js

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+import SlimSelect from 'slim-select';
+import 'slim-select/styles';
+
+export const initSelect = () => {
+  const settings = {
+    showSearch: false,
+    hideSelected: true,
+  };
+
+  new SlimSelect({
+    select: '#selectSort',
+    settings,
+  });
+
+  new SlimSelect({
+    select: '#selectDate',
+    settings,
+  });
+
+  new SlimSelect({
+    select: '#selectCategory',
+    settings,
+  });
+};