Docker images to auto-format Ruby source code based on Prettier Ruby Plugin and Guesslang. Most available solutions out there aren't able to determine correct programming language unless you are using file extensions like *.rb, *.gemspec or Gemfile. That's why we are using Guesslang to detect Ruby source code with much better accuracy. The accuracy of the official plugin is not enough because it doesn't detects for example Vagrantfile as Ruby source code.

docker run --rm -v $(pwd):/src ghcr.io/efsa-io/rbprettier:v1.0.1

Here is an example for your pre-commit-config.yaml:

[…]
repos:
    - repo: local
      hooks:
          - id: rbprettier
            name: rbprettier
            language: docker_image
            entry: ghcr.io/efsa-io/rbprettier:v1.0.1
[…]

pre-commit install

docker build --no-cache -t rbprettier .
mkdir tests
echo 'puts "Hello world!"' > tests/hello.rb
docker run --rm -v $(pwd):/src rbprettier