Provides doctl on every plattform. Simple, fast, docker :D

doctl

#!/bin/sh

set -e

OPWD=`pwd`
DOCTL_DIR="$HOME/.doctl"
DOCTL_RCFILE="$HOME/.doctlrc"
DOCTL_IMAGETAG="doctl:local"

# Check that all we need exists
command_exists() { command -v $1 >/dev/null 2>&1 || { echo >&2 "I require $1 but it's not installed.  Aborting."; exit 1; }; }
docker_installed() { command -v docker >/dev/null 2>&1 || { wget -O- http://get.docker.com | sh - ; }; command -v docker >/dev/null 2>&1 || { echo >&2 "I require docker but it's not installed and I can't install it myself.  Aborting."; exit 1; }; } 

command_exists git
command_exists wget
docker_installed

# Use sudo if docker socket is not writeable
[ -w /var/run/docker.sock ] || SUDO=sudo


# Load .doctlrc only if exists
if [ -e "$DOCTL_RCFILE" ]; then
	source "$DOCTL_RCFILE"
fi

# Check for digital ocean token
if [ ! -v "DOTOKEN" ]; then
	echo "Enter your digital ocean token: "
	read DOTOKEN
	echo ""
	echo "Do you want to store your token in '$DOCTL_RCFILE'? (Y/n)"
	read WRITE_RCFILE
	[ "$WRITE_RCFILE" != "n" ] && echo "DOTOKEN=$DOTOKEN" >> $DOCTL_RCFILE
fi

# Check that doctl exists and is up-to-date
if [ ! -e "$DOCTL_DIR" ]; then
    git clone https://github.com/digitalocean/doctl.git "$DOCTL_DIR"
    cd "$DOCTL_DIR"
    git fetch
fi

cd "$DOCTL_DIR"

# Check the git repository only every 24 hours for updates
if [ "$(($(date +%s)-$(stat -c %Y .git/FETCH_HEAD)))" -gt 86400 ]; then
	git fetch

	# Rebuild container if there was an update
	if [ $(git diff origin/master | wc -l) -gt 0 ]; then
		git pull
		$SUDO docker build -t $DOCTL_IMAGETAG .
	fi
fi

# Check that there is a image. If not build a new one
if [ $($SUDO docker images --format "{{.Repository}}:{{.Tag}}" | grep $DOCTL_IMAGETAG | wc -l) -eq 0 ]; then
	$SUDO docker build -t $DOCTL_IMAGETAG .
fi


# Switch back to original directory
cd "$OPWD"

# Run doctl in container
$SUDO docker run -it --read-only --rm --tmpfs /root/:rw,noexec  -e "DIGITALOCEAN_ACCESS_TOKEN=${DOTOKEN}" $DOCTL_IMAGETAG $@

# Load .doctlrc only if exists
if [ -e "$DOCTL_RCFILE" ]; then
	source "$DOCTL_RCFILE"
fi

# Check for digital ocean token
if [ ! -v "DOTOKEN" ]; then
	echo "Enter your digital ocean token: "
	read DOTOKEN
	echo ""
	echo "Do you want to store your token in '$DOCTL_RCFILE'? (Y/n)"
	read WRITE_RCFILE
	[ "$WRITE_RCFILE" != "n" ] && echo "DOTOKEN=$DOTOKEN" >> $DOCTL_RCFILE
fi

# Check that doctl exists and is up-to-date
[ ! -e "$DOCTL_DIR" ] && git clone https://github.com/digitalocean/doctl.git "$DOCTL_DIR"

cd "$DOCTL_DIR"

# Check the git repository only every 24 hours for updates
if [ "$(($(date +%s)-$(stat -c %Y .git/FETCH_HEAD)))" -gt 86400 ]; then
	git fetch

	# Rebuild container if there was an update
	if [ $(git diff origin/master | wc -l) -gt 0 ]; then
		git pull
		$SUDO docker build -t $DOCTL_IMAGETAG .
	fi
fi

# Check that there is a image. If not build a new one
if [ $($SUDO docker images --format "{{.Repository}}:{{.Tag}}" | grep $DOCTL_IMAGETAG | wc -l) -eq 0 ]; then
	$SUDO docker build -t $DOCTL_IMAGETAG .
fi


# Switch back to original directory
cd "$OPWD"

# Run doctl in container
$SUDO docker run -it --read-only --rm --tmpfs /root/:rw,noexec  -e "DIGITALOCEAN_ACCESS_TOKEN=${DOTOKEN}" $DOCTL_IMAGETAG $@

Looks awesome. Consider submitting it to https://github.com/bddenhartog/container-cli-tools!

Solid!