Add helper_script for python3-clearlinux template

Give a chance to function developers to add extra
initial/helper operation when using the template
python3-clearlinux.

Signed-off-by: Qi Zheng <qi.zheng@intel.com>

FaaS/OpenFaaS/template/README.md

@@ -72,6 +72,7 @@ Steps could refer to
     ├── hello-openfaas
     │   ├── bundles.txt
     │   ├── handler.py
+    │   ├── helper_script.sh
     │   ├── __init__.py
     │   └── requirements.txt
     ├── hello-openfaas.yml
@@ -89,6 +90,10 @@ Steps could refer to
 
     `echo "openblas" >> hello-openfaas/bundles.txt`
     `echo "wget" >> hello-openfaas/bundles.txt`
+
+    *  Put any initial/helper operation in the "help_script.sh"
+
+
 4.  `faas-cli up -f hello-openfaas.yml`
 
     Then you can invoke your python function by OpenFaas UI or faas-cli.

FaaS/OpenFaaS/template/python3-clearlinux/Dockerfile

@@ -35,6 +35,10 @@ RUN for bundle in $(cat bundles.txt); do \
         swupd bundle-add $bundle $swupd_args; \
     done
 
+# give a chance to run help script
+COPY function/helper_script.sh .
+RUN chmod +x helper_script.sh && ./helper_script.sh
+
 WORKDIR /root/
 COPY function           function
 

FaaS/OpenFaaS/template/python3-clearlinux/function/helper_script.sh

@@ -0,0 +1 @@
+#!/bin/bash