jenkins CI to GH actions

.github/workflows/ci.yml

@@ -11,25 +11,26 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./sift-php
     steps:
       - name: setup PHP
         uses: shivammathur/setup-php@v2
         with:
           php-version: '7.1.27'
       - name: Validate composer.json and composer.lock
-        working-directory: ./sift-php
         run: |
           composer validate --strict
       - name: Cache Composer packages
         id: composer-cache
-        working-directory: ./sift-php
+        uses: actions/cache@v3
         with:
           path: vendor
           key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
           restore-keys: |
             ${{ runner.os }}-php-
       - name: siftPhpTest
-        working-directory: ./sift-php
         run: composer exec phpunit -v
 
   run-integration-tests-php74: