title: Fastlane no such file or directory for files that exist
body: <p>I'm trying to setup fastlane to use some files for values in my Deliverfile. These files are in a directory under <code>ProjectRoot/fastlane/shared_metadata/</code></p>
  <p>So, in my Deliverfile I'm using: <code>release_notes File.read(&quot;./shared_metadata/release_notes.txt&quot;)</code>  and when I run my lane it fails telling me</p>
  <blockquote>
  <p>No such file or directory @ rb_sysopen - ./shared_metadata/release_notes.txt</p>
  </blockquote>
  <p>However, in my lane, if I run the same command, <code>releaseNotes = File.read(&quot;./shared_metadata/release_notes.txt&quot;)</code> the var releaseNotes contains my file's contents as normal.</p>
  <p>I've checked <code>pwd</code> multiple times and it is <code>ProjectRoot/fastlane/</code> so I can't figure out why fastlane does not see the files.</p>
  <p>Fastlane keeps returning no such file or directory, even for files in the <code>/fastlane/</code> directory. What is causing this behaviour, and how can I fix it?</p>