#build stage FROM node:14 WORKDIR /app # install coturn RUN apt-get update && apt-get install -y coturn RUN openssl req -x509 -newkey rsa:2048 -keyout /usr/local/etc/turn_server_pkey.pem -out /usr/local/etc/turn_server_cert.pem -days 99999 -nodes CMD [ "turnserver", "-o", "-a", "-f", "-v", "-r", "airsend" ]