fix directory creation in pex dockerfile

apps/cli/executables/pexable/carta_envoy/carta_envoy/carta.py

@@ -96,6 +96,12 @@ def check_processing_dir(location: str) -> bool:
 
 
 def ensure_correct_directory(settings: dict) -> str:
+    """
+    Ensure CARTA will start in the correct directory
+
+    :param settings: settings dict
+    :return:
+    """
     directory = settings["data_location"]
     logger.info(f"Current working directory: {os.getcwd()}")
 

ci/bin/Dockerfile.pex

@@ -2,6 +2,8 @@ FROM centos/python-38-centos7:20210726-fad62e9
 
 USER root
 
+Run mkdir /ci
+
 WORKDIR /ci
 
 COPY ./ci/bin /ci