Add .gitignore and Docker configuration files

.gitignore

+node_modules/
+.env
+dist/
+*.log
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docker/Dockerfile/docker-compose.yml

+version: '3.8'
+services:
+  web:
+    image: node:14
+    volumes:
+      - ./:/usr/src/app
+    working_dir: /usr/src/app
+    command: npm start
+    ports:
+      - "3000:3000"
+    environment:
+      NODE_ENV: development
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