Initial version

LICENSE

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+MIT License
+
+Copyright (c) 2019 Takeshi KOMIYA
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# GitHub Action: Run erb-lint with reviewdog 🐶
+
+This action runs [erb-lint](https://github.com/Shopify/erb-lint) with
+[reviewdog](https://github.com/reviewdog/reviewdog) on pull requests to improve
+code review experience.
+
+## Inputs
+
+### `github_token`
+
+`GITHUB_TOKEN`. Default is `${{ github.token }}`.
+
+### `level`
+
+Optional. Report level for reviewdog [`info`, `warning`, `error`].
+The default is `error`.
+
+### `reporter`
+
+Optional. Reporter of reviewdog command [`github-pr-check`, `github-check`, `github-pr-review`].
+The default is `github-pr-review`.
+
+### `filter_mode`
+
+Optional. Filtering mode for the reviewdog command [`added`, `diff_context`, `file`, `nofilter`].
+Default is `added`.
+
+### `skip_install`
+
+Optional. Do not install Rubocop or its extensions. Default: `false`.
+
+### `use_bundler`
+
+Optional. Run Rubocop with bundle exec. Default: `false`.
+
+## Example usage
+
+```yml
+name: reviewdog
+on: [pull_request]
+jobs:
+  erb-lint:
+    name: runner / erb-lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v1
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.0.0
+      - name: erb-lint
+        uses: reviewdog/action-erblint@v1
+```
+
+## License
+
+[MIT](https://choosealicense.com/licenses/mit)

action.yml

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+name: 'Run erb-lint with reviewdog'
+description: '🐶 Run erb-lint with reviewdog on pull requests to improve code review experience.'
+author: 'tk0miya'
+inputs:
+  github_token:
+    description: 'GITHUB_TOKEN'
+    default: ${{ github.token }}
+  level:
+    description: 'Report level for reviewdog [info,warning,error]'
+    default: 'error'
+  reporter:
+    description: |
+      Reporter of reviewdog command [github-pr-check,github-check,github-pr-review].
+      Default is github-pr-review.
+    default: 'github-pr-review'
+  filter_mode:
+    description: |
+      Filtering mode for the reviewdog command [added,diff_context,file,nofilter].
+      Default is added.
+    default: 'added'
+  use_bundler:
+    description: "Run erb-lint with bundle exec. Default: `false`"
+    default: 'false'
+runs:
+  using: 'composite'
+  steps:
+    - run: $GITHUB_ACTION_PATH/script.sh
+      shell: sh
+      env:
+        INPUT_GITHUB_TOKEN: ${{ inputs.github_token }}
+        INPUT_LEVEL: ${{ inputs.level }}
+        INPUT_REPORTER: ${{ inputs.reporter }}
+        INPUT_FILTER_MODE: ${{ inputs.filter_mode }}
+        INPUT_USE_BUNDLER: ${{ inputs.use_bundler }}

script.sh

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+#!/bin/sh -e
+export REVIEWDOG_GITHUB_API_TOKEN="${INPUT_GITHUB_TOKEN}"
+
+TEMP_PATH="$(mktemp -d)"
+PATH="${TEMP_PATH}:$PATH"
+
+echo '::group::🐶 Installing reviewdog ... https://github.com/reviewdog/reviewdog'
+curl -sfL https://raw.githubusercontent.com/reviewdog/reviewdog/master/install.sh | sh -s -- -b "${TEMP_PATH}" 2>&1
+echo '::endgroup::'
+
+if [ "${INPUT_USE_BUNDLER}" = "true" ]; then
+  echo '::group:: Installing erb-lint via bundler'
+  bundle install
+  echo '::endgroup::'
+fi
+
+if [ "${INPUT_USE_BUNDLER}" = "false" ]; then
+  BUNDLE_EXEC=""
+else
+  BUNDLE_EXEC="bundle exec "
+fi
+
+echo '::group:: Running erb-lint with reviewdog 🐶 ...'
+${BUNDLE_EXEC}erblint --lint-all --format compact \
+  | reviewdog \
+      -efm="%f:%l:%c: %m" \
+      -reporter="${INPUT_REPORTER}" \
+      -filter-mode="${INPUT_FILTER_MODE}" \
+      -level="${INPUT_LEVEL}"
+echo '::endgroup::'