Add instructions for running Agones on Minikube with the Windows Docker driver

[brightestpixel]

What type of PR is this?

/kind documentation

What this PR does / Why we need it:

This PR adds new instructions on how to connect to GameServers using Minikube's default Docker driver on Windows and without too much extra setup (no extra services per GameServer, minikube tunnel, etc.). This should improve the developer experience for those wanting to use Minikube on Windows to test out their GameServers.

The solution is to publish the ports that Agones uses through the minikube start command and let Docker forward connections to Minikube and any GameServers. This workaround has worked well on both Windows systems where I have tried it.

Which issue(s) this PR fixes: N/A

Special notes for your reviewer:

I'm not an expert on container networking, so if anyone has comments on this approach I'd love to hear them!

[agones-bot]

Build Succeeded 🥳

Build Id: fd5a88e7-b1f5-41e5-8bc7-971aaa37ca6a

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.43.0-dev-ddfb866
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.43.0-dev-ddfb866
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.43.0-dev-ddfb866-linux
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.43.0-dev-ddfb866
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.43.0-dev-ddfb866
• Linux C++ SDK (build): agonessdk-1.43.0-dev-ddfb866-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.43.0-dev-ddfb866.zip

A preview of the website (the last 30 builds are retained):

• https://ddfb866-dot-preview-dot-agones-images.appspot.com/

To install this version:

git fetch https://github.com/googleforgames/agones.git pull/3965/head:pr_3965 && git checkout pr_3965
helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.43.0-dev-ddfb866

[igooch]

LGTM. Thank you for the additional testing and documentation.

[agones-bot]

Build Succeeded 🥳

Build Id: 4b371c88-78b6-489e-99dd-4b6d3bae376b

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.44.0-dev-ffd5ddd
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.44.0-dev-ffd5ddd
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.44.0-dev-ffd5ddd-linux
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.44.0-dev-ffd5ddd
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.44.0-dev-ffd5ddd
• Linux C++ SDK (build): agonessdk-1.44.0-dev-ffd5ddd-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.44.0-dev-ffd5ddd.zip

A preview of the website (the last 30 builds are retained):

• https://ffd5ddd-dot-preview-dot-agones-images.appspot.com/

To install this version:

git fetch https://github.com/googleforgames/agones.git pull/3965/head:pr_3965 && git checkout pr_3965
helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.44.0-dev-ffd5ddd