Using random user id while running function containers

[zeerorg]

Update on node js, c# and golang templates to allow running containers with random uid. This makes them compatible with OpenShift.

Context

This issue was noted with Python templates and fixed in #145
I tried to reproduce this issue with 3 templates: nodejs, c# and golang but this issue doesn't affect them and hence there is no need for any change.

How this was tested:

This was tested with the basic idea given in #145 by creating a function from the specific template which uses some external library, building the function and running the docker container with --user <random id>:0

1. NodeJS: MomentJS was used
2. C#: NewtonSoft was used
3. Golang: Now was used

Another testing was done by creating a test.txt file in the function folder and building the function again to check if different UID causes any isssues with reading files and no issue was observed for all 3 templates including Python.

[alexellis]

How about these ones?

https://github.com/openfaas-incubator/python3-debian
https://github.com/openfaas-incubator/python-flask-template/
https://github.com/openfaas-incubator/golang-http-template

(and the Java template?)

Alex

[zeerorg]

I'll test with those and revert back.

[zeerorg]

The java and golang-http templates have no issues running on different users. But the python3-debian and python-flask templates both have user set as root and hence can't run on different users. They both need to be updated.

Error reported: docker: Error response from daemon: OCI runtime create failed: container_linux.go:344: starting container process caused "chdir to cwd (\"/root\") set in config.json failed: permission denied": unknown