bug fix: use /bin/sh as entrypoint to provide predictability

Author: ChrisTimperley

CHANGELOG.md

@@ -1,3 +1,9 @@
+# 1.2.1 (2020-05-27)
+
+* Bug fix: Avoid abrupt container termination due to use of default
+  entrypoint by using `/bin/sh` as an entrypoint.
+
+
 # 1.2.0 (2020-05-27)
 
 * Moved methods in `substitution` module into `ArgumentResolver` class.

src/roswire/proxy/container.py

@@ -145,6 +145,7 @@ def _container(self,
             '/bin/sh',
             user='root',
             name=uuid,
+            entrypoint='/bin/sh -c',
             volumes={dir_host_shared: {'bind': '/.roswire', 'mode': 'rw'}},
             ports=ports,
             stdin_open=True,