ci: add azure pipeline

[skip ci]

Author: ecastro98

azure-pipelines.yml

@@ -0,0 +1,20 @@
+# https://docs.microsoft.com/azure/devops/pipelines/ecosystems/php
+pool:
+  vmImage: 'ubuntu-latest'
+
+variables:
+  phpVersion: 7.1
+
+steps:
+  - script: |
+      sudo update-alternatives --set php /usr/bin/php$(phpVersion)
+      sudo update-alternatives --set phar /usr/bin/phar$(phpVersion)
+      sudo update-alternatives --set phpdbg /usr/bin/phpdbg$(phpVersion)
+      sudo update-alternatives --set php-cgi /usr/bin/php-cgi$(phpVersion)
+      sudo update-alternatives --set phar.phar /usr/bin/phar.phar$(phpVersion)
+      php -version
+    displayName: 'Use PHP version $(phpVersion)'
+  - script: composer install --no-interaction --prefer-dist
+    displayName: 'composer install'
+  - script: composer test
+    displayName: 'Run tests'