Update to new parent image (go 1.15, debian buster). (#124)

- Update to new parent image. It is now go 1.15 and debian buster based.
  Reason to do this is to continue to get security fixes. Go 1.12 went out of support and buster is now latest stable.
- Update 2 testcases as errors during init are now returned in the logs instead of the response itself.

Author: falkzoll

python3.7/CHANGELOG.md

@@ -1,5 +1,19 @@
 # IBM Functions Python 3.7 Runtime Container
 
+## 1.21.0
+Changes:
+  - Update to new parent image to continue getting security fixes.
+    The new parent is now based on go 1.15 (was go 1.12 before) and debian buster (was debian stretch before).
+
+Python version:
+  - [3.7.9](https://github.com/docker-library/python/blob/35d8d9712c3ea4cbc4004a0e62ab61100b6fed99/3.7/buster/Dockerfile)
+
+Python packages:
+  - The file [requirements.txt](requirements.txt) lists the packages we guarantee to be included in this runtime.<br/>
+    Ensure that you only use packages mentioned there.<br/>
+    Other python packages might be part of this runtime, but only due to indirect dependencies of the above listed packages. These indirectly included packages are candidates to be removed at any time in case they are not required by the referring package anymore.
+
+
 ## 1.20.0
 Changes:
   - update ibmcloudsql from `0.4.2` to `0.4.9`

python3.7/Dockerfile

@@ -1,4 +1,4 @@
-FROM openwhisk/actionloop-python-v3.7:248efb5
+FROM openwhisk/actionloop-python-v3.7:4e43668
 
 COPY requirements.txt requirements.txt
 

tests/src/test/scala/actionContainers/IBMPythonActionContainerTests.scala

@@ -238,7 +238,7 @@ class IBMPythonActionContainerTests extends BasicActionRunnerTests with WskActor
         // it actually means it is actionloop
         // it checks the error at init time
         initCode should be(502)
-        initRes.get.fields.get("error").get.toString() should include("No module")
+        initRes.get.fields.get("error").get.toString() should include("Cannot start action. Check logs for details.")
       }
     }
 
@@ -379,7 +379,7 @@ class IBMPythonActionContainerTests extends BasicActionRunnerTests with WskActor
         // action loop detects those errors at init time
         val (initCode, initRes) = c.init(initPayload(code))
         initCode should be(502)
-        initRes.get.fields.get("error").get.toString() should include("Traceback")
+        initRes.get.fields.get("error").get.toString() should include("Cannot start action. Check logs for details.")
       }
     }