feat: add dockerfile and ci workflow

.github/workflows/ci.yml

@@ -0,0 +1,55 @@
+name: Node.js CI for Gitea
+
+on:
+  push:
+    branches: [ "main" ]
+
+jobs:
+  # 1. Этап проверки стиля кода (Линтер)
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run ESLint
+        run: npm run lint
+
+  # 2. Этап запуска тестов (зависит от lint)
+  test:
+    runs-on: ubuntu-latest
+    needs: lint
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run Tests
+        run: npm run test
+
+  # 3. Этап сборки Docker-образа (зависит от test)
+  build:
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Прямая и надежная сборка через стандартную команду docker build
+      - name: Build Docker Image
+        run: docker build -t docker_lab:latest .

Dockerfile

@@ -0,0 +1,6 @@
+FROM node:18-alpine
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci --only=production
+COPY . .
+CMD ["node", "index.js"]