added docker file

packages/file_server/Dockerfile

@@ -0,0 +1,26 @@
+FROM node:16-bullseye-slim
+
+RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
+
+RUN apt update
+RUN apt install --no-install-recommends curl ffmpeg python yarn build-essential -y
+
+RUN mkdir -p /home/node/app/node_modules && chown -R node:node /home/node/app
+
+WORKDIR /home/node/app
+USER node
+
+EXPOSE 3050
+
+COPY package.json ./
+COPY --chown=node:node . .
+
+RUN chmod -R 777 /home/node/app
+
+RUN export NODE_ENV=production
+
+RUN yarn global add cross-env
+RUN yarn install --production
+RUN yarn build
+
+CMD ["yarn", "run", "run:prod"]