Script to update docker-machine config paths which are hardcoded. Needs jq installed which can be installed with home brew.

fix.sh

#!/usr/bin/env bash

for config in ~/.docker/machine/machines/*/config.json; do
   echo Fixing $config to refer to your user. 
   echo Backup at $config.orig
   cp $config $config.orig
   jq --arg user $USER -f users.jq $config > $config.fixed
   mv $config.fixed $config
   echo "Done"
done

users.jq

# We share docker-machine config amoungst users but the paths are
# hardcoded for a particular user. This script will update the user
# to your user on a unix system if $USER environment variable is set
# as your user.
#
# There is probably are more succinct method using jq.
#
# jq --arg user $USER -f users.jq config.json

# If your version of jq doesn't have walk defined in builtin.jq
# which mine didn't (https://github.com/stedolan/jq/blob/master/src/builtin.jq)

def walk(f):
  . as $in
  | if type == "object" then
      reduce keys[] as $key
        ( {}; . + { ($key):  ($in[$key] | walk(f)) } ) | f
  elif type == "array" then map( walk(f) ) | f
  else f
  end;

def replaceUser(obj):
    with_entries(if .value|type == "string" then .value |= sub("/Users/([^/])*/"; "/Users/" + $user + "/") else . end);

walk(if type == "object" then replaceUser(.) else . end)