update workflow

Author: corsicanec82

.github/workflows/master.yaml

@@ -0,0 +1,30 @@
+name: PHP CI
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        php-versions: ['7.4', '8.1']
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up PHP ${{ matrix.php-versions }}
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php-versions }}
+
+    - name: Install
+      run: make install
+
+    - name: Check lint
+      run: make lint
+
+    - name: Execute tests
+      run: make test

.github/workflows/phpci.yaml

@@ -1,6 +1,6 @@
 # php-immutable-fs-trees
 
-[![github action status](https://github.com/hexlet-components/php-immutable-fs-trees/workflows/master/badge.svg)]((https://github.com/hexlet-components/php-immutable-fs-trees/workflows/master/badge.svg))
+[![github action status](https://github.com/hexlet-components/php-immutable-fs-trees/workflows/PHP%20CI/badge.svg)](../../actions)
 
 Functions for working with trees.
 
@@ -33,6 +33,6 @@ map(fn($node) => array_merge($node, ['name' => strtoupper(getName($node))]), $tr
 // ]
 ```
 
-[![Hexlet Ltd. logo](https://raw.githubusercontent.com/Hexlet/assets/master/images/hexlet_logo128.png)](https://ru.hexlet.io/pages/about?utm_source=github&utm_medium=link&utm_campaign=php-eloquent-blog)
+[![Hexlet Ltd. logo](https://raw.githubusercontent.com/Hexlet/assets/master/images/hexlet_logo128.png)](https://ru.hexlet.io/pages/about?utm_source=github&utm_medium=link&utm_campaign=php-immutable-fs-trees)
 
-This repository is created and maintained by the team and the community of Hexlet, an educational project. [Read more about Hexlet (in Russian)](https://ru.hexlet.io/pages/about?utm_source=github&utm_medium=link&utm_campaign=php-eloquent-blog).
+This repository is created and maintained by the team and the community of Hexlet, an educational project. [Read more about Hexlet (in Russian)](https://ru.hexlet.io/pages/about?utm_source=github&utm_medium=link&utm_campaign=php-immutable-fs-trees).