apt caching for debootstrap
If you’re building system images, you’re going to do a lot of debootstrap, which is going to fetch a lot of packages. On a fast system, that’ll be the slowest part of the process. Here’s how to cache.
sudo apt-get install squid-deb-proxy
Tell programs to use the proxy
export http_proxy=http://127.0.0.1:8000 # Note that you'll need to re-export this before any use of debootstrap
Tell sudo to pass through http_proxy
sudo visudo # Add the line after the env_reset line: Defaults env_keep += "http_proxy"