Add checkout

Author: dsrodenas

.github/workflows/basket-api.yml

@@ -52,6 +52,8 @@ jobs:
     runs-on: ubuntu-16.04
     if: ${{ github.event_name != 'pull_request' }}
     steps:
+    - name: 'Checkout Github Action'
+      uses: actions/checkout@master
     - name: Compose build ${{ env.services  }}
       run: docker-compose -f src/docker-compose.yml build $env.services
       shell: bash