boot2docker init script for OS X

boot2docker-init.sh

#!/bin/bash

#
# boot2docker init OS X
#

FORCE=${1-true}

USERS="/Users"
VAR="/var/folders"
TMP="/tmp"

DIRS=("$USERS" "$VAR" "$TMP");

USERID="2004"
GROUPID="50"

VM="boot2docker-vm"
DOCKER_MACHINE="boot2docker"
VBOXMANAGE="vboxmanage"

BLUE='\033[0;34m'
GREEN='\033[0;32m'
NC='\033[0m'

unset DYLD_LIBRARY_PATH
unset LD_LIBRARY_PATH

if [ ! -f $DOCKER_MACHINE ] || [ ! -f $VBOXMANAGE ]; then
  echo "Either VirtualBox or boot2docker are not installed. Please install them and try again."
  exit 1
fi

# If no boot2docker vm is found, inititialize a new instance
if [ $($VBOXMANAGE list vms | grep -ci $VM) -ne 1 ]; then
  echo "No boot2docker VM found, initializing a new instance."
  boot2docker init
fi

# Start the vm if it is powered off and set shellinit
if [ $($VBOXMANAGE list runningvms | grep -ci $VM) -ne 1 ]; then
  echo "The boot2docker VM is not running, starting now."
  if [ $(boot2docker start | grep -ci "Started.") -eq 1 ]; then
    $(boot2docker shellinit)
  else
    echo "Error starting boot2docker VM"
    exit 1
  fi
fi

echo "Setting environment variables for machine $VM..."

eval $(boot2docker shellinit)

function umount {
  DIR=$1
  WORKDIR=$2

  echo "$DIR mount deteted, unmounting now."
  $DOCKER_MACHINE ssh "sudo umount $DIR"
  $VBOXMANAGE sharedfolder remove $VM --name "$WORKDIR" --transient
}

function mount {
  DIR=$1
  WORKDIR=$2
  
  $DOCKER_MACHINE ssh "sudo mkdir -p $DIR"

  $VBOXMANAGE sharedfolder add $VM --name "$WORKDIR" --hostpath "$DIR" --transient
  $DOCKER_MACHINE ssh "sudo mount -t vboxsf -o uid=$USERID,gid=$GROUPID $WORKDIR $DIR"
  $VBOXMANAGE setextradata $VM "VBoxInternal2/SharedFoldersEnableSymlinksCreate/$WORKDIR" 1

  echo "Mount $DIR created."
}

for DIR in "${DIRS[@]}"; do
  WORKDIR=$(basename "$DIR")

  MOUNT_EXISTS="$($DOCKER_MACHINE ssh "mount | grep vboxsf | grep $DIR" 2>/dev/null)"

  if [ "$FORCE" == "true" ] && [ -n "$MOUNT_EXISTS" ]; then
    umount $DIR $WORKDIR
    mount $DIR $WORKDIR
  elif [ -z "$MOUNT_EXISTS" ]; then
    mount $DIR $WORKDIR
  else
    echo "$DIR already mounted"
  fi

done