Rebuild python docker image (#5475)
* Rebuild python docker image
* Update docker image
* Change call to build_and_run_docker.sh
* Set up python tests for different versions
* Fix comments
diff --git a/kokoro/linux/python35_cpp/build.sh b/kokoro/linux/python35_cpp/build.sh
new file mode 100755
index 0000000..2a79246
--- /dev/null
+++ b/kokoro/linux/python35_cpp/build.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+#
+# This is the top-level script we give to Kokoro as the entry point for
+# running the "pull request" project:
+#
+# This script selects a specific Dockerfile (for building a Docker image) and
+# a script to run inside that image. Then we delegate to the general
+# build_and_run_docker.sh script.
+
+# Change to repo root
+cd $(dirname $0)/../../..
+
+export DOCKERHUB_ORGANIZATION=protobuftesting
+export DOCKERFILE_DIR=kokoro/linux/dockerfile/test/python_stretch
+export DOCKER_RUN_SCRIPT=kokoro/linux/pull_request_in_docker.sh
+export OUTPUT_DIR=testoutput
+export TEST_SET="python35_cpp"
+./kokoro/linux/build_and_run_docker.sh
