update fails when a file doesn't exist

[robb-j]

puggle update
✔ Update project at '.'? … yes
puggle update [path]

Update a project setup with puggle

Positionals:
  path  Where the puggle project to update is            [string] [default: "."]

Options:
  --version  Show version number                                       [boolean]
  --dryRun   Don't actually create files              [boolean] [default: false]
  --help     Show help                                                 [boolean]

[Error: ENOENT: no such file or directory, open '.dockerignore'] {
  errno: -2,
  code: 'ENOENT',
  syscall: 'open',
  path: '.dockerignore'
}