FROM node:16.1.0-alpine RUN apk update && apk add dnsmasq WORKDIR /usr/app # schedule critical checks to run every 5 minutes (any failures will disable server) RUN echo '*/5 * * * * /usr/app/cli/run critical > /dev/stdout' >> /etc/crontabs/root # schedule extended checks to run on every hour (optional checks, report only) RUN echo '0 * * * * /usr/app/cli/run extended > /dev/stdout' >> /etc/crontabs/root COPY package.json . RUN yarn --no-lockfile COPY src src COPY cli cli EXPOSE 3100 ENV NODE_ENV production # 1. alias siasky.net with current server ip to ommit load balancer # 2. prepend dnsmasq nameserver so it tries to resolve first # 3. start dnsmasq in the background # 4. start crond in the background # 5. start the health-check api service CMD [ "sh", "-c", \ "echo -e \"nameserver 127.0.0.1\n$(cat /etc/resolv.conf)\" > /etc/resolv.conf ; \ dnsmasq --strict-order --log-debug --no-resolv --log-queries --log-facility=/var/log/dnsmasq.log --address=/siasky.net/$(node src/whatismyip.js) ; \ crond ; \ node --max-http-header-size=64000 src/index.js" \ ]