[rtwcli] ws create: raise RuntimeError on existing container (#239)

rtwcli/rtw_cmds/rtw_cmds/workspace/create_verb.py

@@ -33,6 +33,7 @@
 from rtwcli.docker_utils import (
     change_docker_path_permissions,
     docker_build,
+    docker_container_exists,
     docker_cp,
     docker_exec_bash_cmd,
     docker_stop,
@@ -899,6 +900,15 @@ def main(self, *, args):
         rich.print(create_args)
         logger.info("### CREATE ARGS ###")
 
+        if create_args.docker and docker_container_exists(create_args.container_name):
+            raise RuntimeError(
+                f"Docker container with name '{create_args.container_name}' already exists.\n"
+                "Options:\n"
+                " - renaming the workspace folder\n"
+                " - renaming the container name\n"
+                " - removing the existing container\n"
+            )
+
         if create_args.docker:
             self.build_intermediate_docker_image(create_args)
 

rtwcli/rtwcli/rtwcli/cli.py

@@ -16,6 +16,7 @@
 
 import argparse
 import signal
+from rich.console import Console
 
 from rtwcli.command import add_subparsers_on_demand
 
@@ -66,11 +67,14 @@ def main(*, script_name="rtw", argv=None, description=None, extension=None):
         parser.print_help()
         return 0
 
+    console = Console()
+
     # call the main method of the extension
     try:
         rc = extension.main(parser=parser, args=args)
     except KeyboardInterrupt:
         rc = signal.SIGINT
-    except RuntimeError as e:
-        rc = str(e)
+    except RuntimeError:
+        console.print_exception()
+        return 1
     return rc