Clean and fix scripts in bin directory

setup

@@ -0,0 +1,52 @@
+#!/bin/sh
+set -e
+#
+# This script is meant for quick & easy install via:
+#   'curl -sL https://raw.githubusercontent.com/Boukefalos/docker-deployment/master/setup | sh'
+# or:
+#   'wget -qO- https://raw.githubusercontent.com/Boukefalos/docker-deployment/master/setup | sh'
+
+home=/opt/docker
+url='https://get.docker.io/'
+
+command_exists() {
+	command -v "$@" > /dev/null 2>&1
+}
+
+if ! command_exists docker; then
+    echo Docker should be installed!
+    exit 0
+fi
+
+user="$(id -un 2>/dev/null || true)"
+
+sh_c='sh -c'
+if [ "$user" != 'root' ]; then
+	if command_exists sudo; then
+		sh_c='sudo sh -c'
+	elif command_exists su; then
+		sh_c='su -c'
+	else
+		echo >&2 'Error: this installer needs the ability to run commands as root.'
+		echo >&2 'We are unable to find either "sudo" or "su" available to make this happen.'
+		exit 1
+	fi
+fi
+
+curl=''
+if command_exists curl; then
+	curl='curl -sL'
+elif command_exists wget; then
+	curl='wget -qO-'
+elif command_exists busybox && busybox --list-modules | grep -q wget; then
+	curl='busybox wget -qO-'
+fi
+
+if [ -z "$DOCKER_HOME" ]; then
+    echo "DOCKER_HOME has not been set, defaulting to $home"
+    export DOCKER_HOME=$home
+    $sh_c "echo DOCKER_HOME=$home >> /etc/environment"
+fi
+
+mkdir -p $DOCKER_HOME
+docker run --rm -v /usr/local/bin:/target jpetazzo/nsenter