wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
bash Miniconda3-latest-Linux-x86_64.sh
# yes yes
source ~/.bashrc
rm Miniconda3-latest-Linux-x86_64.sh
# to ensure WSL can start normally without an active conda env
conda config --set auto_activate_base false
installs into /home/<user>/miniconda3
https://gist.github.com/kauffmanes/5e74916617f9993bc3479f401dfec7da