Add changes for v1 and documentation

Author: Unai Abrisketa

README.md

@@ -1 +1,24 @@
-### Team 42 Bundle run
+# action-ruby-run
+
+GitHub Action for installing Ruby gems and running commands. It caches dependencies for reduced execution times.
+
+## Inputs
+
+| Name                 | Description                  | Default | Required |
+|----------------------|------------------------------|---------|----------|
+| `ruby_version`       | The Ruby version to be used. | `3.1.2` | `true`   |
+| `cmd`                | The command to be executed.  | `nil`   | `true`   |
+| `bundle_github__com` | The GitHub access token.     | `nil`   | `false`  |
+
+## Usage
+
+```yml
+jobs:
+  rubocop:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: ePages-de/action-ruby-run@v1
+        with:
+          ruby_version: 3.1.2
+          cmd: bundle exec rubocop
+```

action.yaml

@@ -0,0 +1,28 @@
+name: Run Ruby
+description: Install Bundle gems and run commands.
+author: Alket Tarko <atarko@epages.com>, Roberto Welzel Filho <rwelzel@epages.com>, Unai Abrisketa <uabrisketa@epages.com>
+
+inputs:
+  ruby_version:
+    description: The Ruby version to be used. Defaults to `3.1.2`.
+    required: true
+    default: '3.1.2'
+  bundle_github__com:
+    description: The GitHub access token.
+    required: false
+  cmd:
+    description: The command to be executed.
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - uses: actions/checkout@v2
+    - uses: ruby/setup-ruby@v1
+      env:
+        BUNDLE_GITHUB__COM: ${{ inputs.bundle_github__com }}
+      with:
+        ruby-version: ${{ inputs.ruby_version }}
+        bundler-cache: true
+    - shell: bash
+      run: ${{ inputs.cmd }}