As part of this commit, I upgraded the golang image used for building to
1.16 and consolidated how the docker-build rule was working. Previously,
it was failing in master's CI because the go modules were not downloaded
in the build image. To improve that, I replaced the combination of
docker run and docker build by a multi-stage Dockerfile responsible for
building the adapter and running it.
In addition to that, I removed the `_output` directory completely as it
wasn't really meaningful to have it anymore. I also removed the
`build-local-image` rule as it was a duplicate of the `docker-build`
rule with the only different of using a scratch base image.
Also, since all the base images that we are using by default are based
on busybox, I change the UID used in the image to 65534 which correspond
to the nobody user in busybox.
Signed-off-by: Damien Grisonnet <dgrisonn@redhat.com>
This restructures the walkthrough to focus on the goal of scaling an
application from the start. We start out with an application and an
autoscaler, and then walk through how we can make the autoscaler
actually able to function.
A helful community member rightly pointed out that configuring the
adapter was a bit confusing, and a step-by-step example would be useful.
This adds such an example, and links to it from relevant places.
This fixes up a couple of typos in the walkthrough and updates it to
mention config and the Prometheus Operator.
It probably eventually needs to be further modified with more specific
instructions about the Prometheus Operator.
