generate-sas expiry example doesn't work on official docker image

[devon-whil]

This is autogenerated. Please review and update as needed.

Describe the bug

The following expiry example from here does not work on the official az cli docker image.

end=`date -u -d "30 minutes" '+%Y-%m-%dT%H:%MZ'`
sas=`az storage container generate-sas -n mycontainer --https-only --permissions dlrw --expiry $end -o tsv`
az storage blob upload -n MyBlob -c mycontainer -f file.txt --sas-token $sas

Command Name
This issue relates to the az storage container generate-sas command, but the problem in the example is with the date command.

Errors:

docker run -it mcr.microsoft.com/azure-cli:latest bash
bash-5.1# end=`date -u -d "30 minutes" '+%Y-%m-%dT%H:%MZ'`
date: invalid date '30 minutes'

To Reproduce:

See "Errors" section.

Expected Behavior

I expect a date example that works on the official docker image.

Environment Summary

Linux-5.10.25-linuxkit-x86_64-with, Alpine Linux v3.16
Python 3.10.5
Installer: DOCKER

azure-cli 2.39.0

Additional Context

None

[yonzhan]

@evelyn-ys for awareness

[evelyn-ys]

This is actually not CLI issue. You can use man date to see the usage for date command in bash.
date -u -d "30 minutes" '+%Y-%m-%dT%H:%MZ' does work:

Thank you for your feedback. This has been routed to the support team for assistance.

[bebound]

Official image uses alpine as base image. The date command in alpine does not support -d flag (docker-library/official-images#771).
Installing coreutils date to make it work again: apk add --update coreutils.

@jiasli Should we fix this in docker image?

azure-cli/Dockerfile

Line 8 in ddd6467

FROM python:${PYTHON_VERSION}-alpine