Description

Please explain the changes you made here.

Requirements / Checklist

• Read the Contributing Guidelines
• Read or at least glanced at the FAQ
• Read or at least glanced at the Wiki
• Scripts execute without error (if necessary):
  • If any of the scripts were modified they have been tested and execute without error, e.g.:
    • docker run -v ~/input:/in -v ~/output:/out patcher -c

What does this Pull Request (PR) do?

Make Docker setup work

Any background context you can provide?

• build a new image and use the docker commands listed on the Readme

Screenshots (if appropriate or helpful)

Proof that the patched font has the expected symbols.