Handle docker image not found errors

Author: saville

buildrunner/__init__.py

@@ -472,6 +472,7 @@ def run(self):  # pylint: disable=too-many-statements,too-many-branches,too-many
                         )
                 else:
                     self.log.write("\nPush not requested\n")
+
         except requests.exceptions.ConnectionError as rce:
             print(str(rce))
             exit_explanation = (
@@ -481,6 +482,9 @@ def run(self):  # pylint: disable=too-many-statements,too-many-branches,too-many
                 "remote PyPi server information is set correctly."
             )
             self.exit_code = 1
+        except ImageNotFound as inf:
+            exit_explanation = f"Image not found: {inf.explanation}"
+            self.exit_code = os.EX_CONFIG
         except BuildRunnerError as exc:
             exit_explanation = str(exc)
             self.exit_code = (

tests/test-files/test-docker-pull-failure.yaml

@@ -2,5 +2,5 @@
 steps:
   use-bogus-image:
     run:
-      image: user1/buildrunner-test-multi-platform:bogus
+      image: user1/buildrunner-bogus-image:bogus
       cmd: echo "Hello World"