Cirrus-ci-docs: Provide IPs for build nodes

[iskakaushik]

Description

Provide a list of IPs or subnet ranges of the build nodes. For reference travis ci has them like so: https://docs.travis-ci.com/user/ip-addresses/

Context

For applications that query external APIs, (e.g tests that use google maps or firebase) it is good to restrict the ip ranges that can make the requests using the said API keys.

cc: @amirh, @cyanglaz, @collinjackson

[fkorotkov]

@iskakaushik it will require some infrastructure upgrades. I will prepare everything next week and will do the upgrades over the next weekend since the upgrades will disturb task execution. Sorry for the inconveniences! I hope it can wait on your side.

[fkorotkov]

@iskakaushik Linux containers now use 35.222.255.190 IP for all the requests. You can also check A record for gcp.community.nat.cirrus-ci.com.

Upgrade appeared to be a little more complicated so Linux/FreeBSD VMs, Windows and macOS upgrade will follow in the coming weeks.

[iskakaushik]

Thanks @fkorotkov , eagerly waiting fore macOS support! 👍

[fkorotkov]

@iskakaushik working with MacStadium folks on it. In the meantime you can test the Linux side. 🙌

[fkorotkov]

macstadium.community.nat.cirrus-ci.com is also now available with value of 207.254.42.60.

Windows workloads will be coming next.