add docker build files

Dockerfile

@@ -0,0 +1,11 @@
+FROM node:alpine as Build
+ENV NODE_ENV=production
+WORKDIR /app
+
+COPY [ "yarn.lock", "package.json", "index.ts", "tsconfig.json", "./" ]
+COPY server ./server
+
+RUN yarn install --production
+
+RUN yarn run build
+CMD ["yarn run start"]