Get a lot of docker pull rate limit error on travis recently

[Yuxuan Wang <yu...@reddit.com.INVALID>]

The travis log usually ends with this:


Rebuilding docker image ubuntu-bionic
Sending build context to Docker daemon  11.78kB
Step 1/48 : FROM buildpack-deps:bionic-scm
bionic-scm: Pulling from library/buildpack-deps
: Pulling from library/buildpack-deps
toomanyrequests: You have reached your pull rate limit. You may increase
the limit by authenticating and upgrading:
https://www.docker.com/increase-rate-limit
The command "if [[ `uname` == "Linux" ]]; then build/docker/refresh.sh; fi"
failed and exited with 1 during .

Your build has been stopped.


Not sure if there's a good solution to that. Does the ASF have a contract
with docker, or maybe have an internal docker registry mirror, or
something? Or maybe since the ASF has a contract with travis, we should
escalate this to travis?