docker, docker-enter installer + installs a wordpress dev instance

dockhand.sh

#!/bin/bash
# Wordpress dev env installer for dummies.

command_exists() {
	command -v "$@" > /dev/null 2>&1
}

user="$(id -un 2>/dev/null || true)"

sh_c='sh -c'
if [ "$user" != 'root' ]; then
	if command_exists sudo; then
		sh_c='sudo -E sh -c'
	elif command_exists su; then
		sh_c='su -c'
	else
		echo >&2 'Error: this installer needs the ability to run commands as root.'
		echo >&2 'We are unable to find either "sudo" or "su" available to make this happen.'
		exit 1
	fi
fi

curl=''
if command_exists curl; then
	curl='curl -sSL'
elif command_exists wget; then
	curl='wget -qO-'
elif command_exists busybox && busybox --list-modules | grep -q wget; then
	curl='busybox wget -qO-'
fi

# Install latest docker version (not the outdated docker.io package)
# -> does not support Archlinux yet
curl http://get.docker.com/ | sudo sh

# Taking care of the local copy of wordpress...
if [ -d wordpress ]; then
    rm -rf wordpress
fi

# Actually downloading it...
curl -sSL http://wordpress.org/latest.tar.gz | tar xzC .
curl -sS http://wpcandy.s3.amazonaws.com/resources/postsxml.zip > file.zip ; unzip -j file.zip posts.xml -d wordpress/wp-content/ ; rm file.zip

# Install docker-enter
curl -o /usr/local/bin/docker-enter https://raw.githubusercontent.com/jpetazzo/nsenter/master/docker-enter
chmod 755 /usr/local/bin/docker-enter

# Run docker commands
if command_exists docker && [ -e /var/run/docker.sock ]; then
	(
		set -x
		$sh_c 'docker run -d -p 80:80 --name wordpress -v $(pwd)/wordpress/wp-content/:/var/www/wordpress/wp-content rigelk/pressgang'
	) || true
fi

# Self destruct :)
rm -- "$0"

# Enter the newly created container
if command_exists docker && [ -e /var/run/docker.sock ]; then
	(
		set -x
		$sh_c 'docker-enter wordpress'
	) || true
fi