cd into the directory of the platform you wish to build on
Build the docker image docker build -t "telegraf_builder" .
Checkout the signalfx/telegraf fork (make sure you're on the signalfx-integration branch)
Run the container and mount in the repository and the output directory docker run -ti -v <path to repository>:/src -v <path to this directory>/output:/output telegraf_builder
Retrieve the the zip file containing the telegraf binary