update docker-compose so selenium tests works

.circleci/config.yml

@@ -14,6 +14,10 @@ jobs:
       - run:
           command: |
             cd BTCPayServer.Tests
+            curl -L https://github.com/docker/compose/releases/download/1.23.2/docker-compose-`uname -s`-`uname -m` > ~/docker-compose
+            chmod +x ~/docker-compose
+            sudo mv ~/docker-compose /usr/local/bin/docker-compose
+            docker-compose -v
             docker-compose down --v
             docker-compose build
             TESTS_RUN_EXTERNAL_INTEGRATION="false"