Add changes for v1 and documentation

Author: Unai Abrisketa

README.md

@@ -1,2 +1,25 @@
-## action-node-run
-GitHub composite action(s) aimed to run node commands
+# action-node-run
+
+GitHub Action for installing Node/Yarn packages on development environment and running commands. It caches dependencies for reduced execution times.
+
+## Inputs
+
+| Name           | Description                                               | Default | Required |
+| -------------- | --------------------------------------------------------- | ------- | -------- |
+| `node_version` | The node version to be used.                              | `18`    | `true`   |
+| `cache_key`    | The cache key to be checked. Can be one of `npm`, `yarn`. | `yarn`  | `true`   |
+| `cmd`          | The command to be executed.                               | `nil`   | `true`   |
+
+## Usage
+
+```yml
+jobs:
+  eslint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: ePages-de/action-node-run@v1
+        with:
+          node_version: 18
+          cache_key: yarn
+          cmd: npx eslint
+```

action.yml

@@ -0,0 +1,34 @@
+name: Run Node/Yarn
+description: Install Node/Yarn packages on development environment and run commands.
+author: Manel Merino <[email protected]>, Roberto Welzel Filho <[email protected]>, Unai Abrisketa <[email protected]>
+
+inputs:
+  node_version:
+    description: The node version to be used. Defaults to `18`.
+    required: true
+    default: '18'
+  cache_key:
+    description: The cache key to be checked. Can be one of `npm`, `yarn`. Defaults to `yarn`.
+    required: true
+    default: yarn
+  cmd:
+    description: The command to be executed.
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v3
+      with:
+        node-version: ${{ inputs.node_version }}
+        cache: ${{ inputs.cache_key }}
+    - shell: bash
+      run: |
+        if [ "${{ inputs.cache_key }}" -eq 'npm' ]; then
+          npm install --production=false
+        else
+          yarn install --production=false
+        fi
+    - shell: bash
+      run: ${{ inputs.cmd }}