boot2docker-nfs-share.sh

#!/bin/bash

#
# This script will create a fstab entry for the current folder in the boot2docker guest 
# and mount the volume over exististing one if it exists. You can also use folders
# other then /User. 
# 
# Usage: ./nfs-share.sh
#

DIR=`printf "%q\n" "$(pwd)"`

MACHINE=`echo $DOCKER_HOST | perl -pe 's/^tcp:\/\/(\d{1,3}(\.\d{1,3}){3})\:2376$/$1/'`
BASEIP=`echo $MACHINE | cut -d"." -f1-3`

cat > bootlocal.sh <<EOF
#!/bin/sh

sudo /usr/local/etc/init.d/nfs-client start

sudo install -d -o docker -g staff -m 775 ${DIR}
sudo echo "$BASEIP.1:$DIR $DIR nfs rw,async,noatime,rsize=32768,wsize=32768,proto=tcp,nfsvers=3 0 0" | sudo tee -a /etc/fstab
sudo mount $DIR
EOF

docker-machine scp ./bootlocal.sh $DOCKER_MACHINE_NAME:/tmp/bootlocal.sh
rm bootlocal.sh

ssh docker@$MACHINE -i $DOCKER_CERT_PATH/id_rsa "sudo /bin/chmod +x /tmp/bootlocal.sh"
ssh docker@$MACHINE -i $DOCKER_CERT_PATH/id_rsa "sudo /bin/mv /tmp/bootlocal.sh /mnt/sda1/var/lib/boot2docker/bootlocal.sh"

docker-machine stop $DOCKER_MACHINE_NAME

HASH=`md5 -q -s "$MACHINE$DIR"`
if ! grep -q $HASH /etc/exports; then
    GID=$(id -g)
    echo "Appending to /etc/exports:"
    cat > exports.tmp <<EOF
# DOCKER-BEGIN $HASH
"$DIR" $MACHINE -alldirs -mapall=$UID:$GID
# DOCKER-END $HASH
EOF
    cat exports.tmp | sudo tee -a /etc/exports
    rm exports.tmp

    echo "Appending to /etc/nfs.conf:"
    if ! sudo grep -q 'nfs.server.mount.require_resv_port' /etc/nfs.conf; then
        echo "# Added by nfs-share.sh" | sudo tee -a /etc/nfs.conf
        echo "nfs.server.mount.require_resv_port = 0" | sudo tee -a /etc/nfs.conf
    fi

    sudo nfsd restart
fi
    
docker-machine start $DOCKER_MACHINE_NAME

Thanks, helpful script!

I'm not sure how this will be for others, but the IP address my VM needed to access my mac was not .1 but the IP address for my bridge100 network interface.