local docker environment setup

docker.sh

# set up docker volume and image (host ~ will be bound to /host)
docker volume create devenv
mkdir -p ~/.alpine-dev
docker run -v ~:/host -it --mount source=devenv,target=/Users/sam/.alpine-dev --name alpine-dev alpine

# setup within container:
apk add bash
ln -fs /bin/bash /bin/sh
adduser sam
apk add sudo
# nano /etc/sudo[TAB] and add a line for user sam

# terminal start command:
docker start alpine-dev && docker exec -it alpine-dev sudo -u sam bash