docker-machine setup for mac with nfs and vmware

docker-machine-setup.sh

#!/bin/bash
#
# the following functions can be used to provision, or reprovision docker-machine as a replacement for docker-for-mac
# it has only been tested with vmware on osx catalina
#
# it assumes the following has already been run:
# brew install docker-machine docker
#

get-interface-ip-from-ip-route() {
  local ip="${1}"
  ifconfig -m "$(route get "${ip}" | awk '{if ($1 ~ /interface:/){print $2}}')" | awk 'sub(/inet /,""){print $1}'
}

idempotent-append() {
  local LINE="" FILE="" SUDO=""
  LINE="$1"
  FILE="$2"
  SUDO=$([[ -w "$FILE" ]] && echo "" || echo "sudo")
  grep -qF -- "$LINE" "$FILE" 2>/dev/null || echo "$LINE" | $SUDO tee -a "$FILE"
}

nfs-setup() {
  local interface_ip="" machine_ip=""
  idempotent-append "$HOME -alldirs -mapall=$(id -u):$(id -g) localhost" /etc/exports
  if [[ "$(docker-machine status)" == "Running" ]]; then
    interface_ip=$(get-interface-ip-from-ip-route "$(docker-machine ip "$(docker-machine active)")")
    idempotent-append "$HOME -alldirs -mapall=$(id -u):$(id -g) $interface_ip" /etc/exports

    machine_ip=$(docker-machine ip "$(docker-machine active)")
    idempotent-append "$HOME -alldirs -mapall=$(id -u):$(id -g) $machine_ip" /etc/exports
  fi

  idempotent-append "nfs.server.mount.require_resv_port = 0" /etc/nfs.conf
  sudo nfsd restart
}

docker-machine-reset() {
  local driver="vmware"
  driver="${1:-$driver}"
  docker-machine ls -q | xargs docker-machine rm -y
  eval docker-machine create --driver="${driver}" --"${driver}"-boot2docker-url https://github.com/kaosagnt/boot2docker-xfs-ng/releases/download/20.10.8/boot2docker.iso default
  eval "$(docker-machine env default)"
  host_docker_internal=$(get-interface-ip-from-ip-route "$(docker-machine ip default)")
  docker-machine ssh default "l=\"$host_docker_internal host.docker.internal\"; grep -qF \"\$l\" /etc/hosts 2>/dev/null || echo \"\$l\" | sudo tee -a /etc/hosts 2>/dev/null; [[ -e /var/run/rpcbind.sock ]] || sudo /usr/local/etc/init.d/nfs-client start"
  while read -r exported_folder
  do
    docker-machine ssh default "sudo mkdir -p $exported_folder; sudo mount -t nfs -o rw,relatime,vers=3,rsize=65536,wsize=65536,namlen=255,hard,noresvport,proto=tcp,timeo=600,retrans=2,sec=sys,mountvers=3,mountproto=tcp,local_lock=posix host.docker.internal:$exported_folder $exported_folder"
  done < <(cat /etc/exports | awk '{print $1}' | sort -u)
  docker-machine ssh default "echo '{\"max-concurrent-uploads\":10,\"max-concurrent-downloads\":10}' | sudo tee /etc/docker/daemon.json"
  docker-machine ssh default "sudo sed -i'' -e 's/ulimit -p unlimited/ulimit -u unlimited/' /etc/init.d/docker; sudo /etc/init.d/docker restart"
}

mount-home-volume() {
  docker volume create -d local -o type="nfs" -o o="addr=host.docker.internal,rw,local_lock=posix,hard,nointr,nfsvers=3,rsize=1048576,wsize=1048576,timeo=600,retrans=2,noresvport" -o device=":$HOME" --name home_nfs &> /dev/null
  echo "-v \"home_nfs:$HOME\" -e \"HOST_HOME=$HOME\" -w \"$PWD\""
}