Dockerize Python tests

This PR migrates an initial few tests to be run in a docker container. For now, it just migrates:
- Unit tests
- Cmdexec timestamp integration test

Follow up PRs will continue with a gradual migration of tests to keep everything under control.

Re-running unit tests, Timestamp integration test and old integration tests to verify nothing breaks

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Author: NiallEgan

cmdexec/clients/python/test-container-with-reqs.dockerfile

@@ -0,0 +1,9 @@
+FROM python:3.7-slim-buster
+
+RUN pip install grpcio==1.41.0 \
+                pyarrow==5.0.0 \
+                protobuf==3.18.1 \
+                cryptography==35.0.0 \
+                thrift==0.13.0
+
+ENTRYPOINT ["./docker-entrypoint.sh"]

cmdexec/clients/python/tests/docker-entrypoint.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+set -e
+export PYTHONPATH=$(pwd)
+
+unit() {
+  python cmdexec/clients/python/tests/tests.py 
+}
+
+integration() {
+  # This is just a temporary hack until we have done the full migration and can change the import
+  # names across the board
+  touch qa/__init__.py
+  touch qa/test/__init__.py
+  touch qa/test/bi/__init__.py
+  python test_executor.py "$@"
+}
+
+case "$1" in
+unit)
+    shift
+    unit
+    ;;
+integration)
+    shift
+    integration "$@"
+    ;;
+*)
+  echo "unrecognised command $1"
+  exit 1
+  ;;
+esac
+

cmdexec/clients/python/tests/docker-run-unit.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+docker run $(./cmdexec/clients/cmdexec-python-test-container-full_binary_loader) unit