Improve local DNS with Spin

[jaydrogers]

Problem

• The local DNS configuration in the docs could use some extra clarity

Related threads

https://discord.com/channels/910287105714954251/910299290230997003/1195043928790007878

Proposed Solution

• Identify which areas could use improvement
• Ensure the talk about Traefik labels are discussed
• See if there is a way we can automated (hopeful feature 🦄)

[yusufkandemir]

I've found dnsmasq to work well.

macOS instructions for installing it and configuring it for *.test domains

# install dnsmasq
brew install dnsmasq

# create the configuration and point *.test to 127.0.0.1
mkdir -pv $(brew --prefix)/etc/
echo 'address=/.test/127.0.0.1' >> $(brew --prefix)/etc/dnsmasq.conf

# create resolver for *.test domains
sudo mkdir -p /etc/resolver
sudo bash -c 'echo "nameserver 127.0.0.1" > /etc/resolver/test

# start the dnsmasq service, will also be added to system startup
sudo brew services start dnsmasq