prepare for docker hosting

.dockerignore

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+node_modules
+.env
+.env.example
+npm-debug.log
+out

Dockerfile

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+FROM node:18
+
+WORKDIR /usr/src/app
+
+COPY package*.json ./
+RUN npm ci --omit=dev
+COPY . .
+
+RUN npm run build
+EXPOSE 3001
+
+CMD [ "npm", "run", "startServer"]