[Image Update] Add oras about cloudshell

[darrentu]

Hi @ridhoq, thanks for bringing this to our attention. Since it's not available in Azure Linux, it'll be tricky for us to compliantly install this software. If you want this quickly, we recommend just installing it into your own cloud shell.

cd ~
VERSION="1.2.0"
curl -LO "https://github.com/oras-project/oras/releases/download/v${VERSION}/oras_${VERSION}_linux_amd64.tar.gz"
mkdir -p ~/oras-install/
mkdir -p ~/.local/bin/
tar -zxf oras_${VERSION}_*.tar.gz -C oras-install/
mv ~/oras-install/oras ~/.local/bin/oras
rm -rf oras_${VERSION}_*.tar.gz oras-install/

Reference: https://oras.land/docs/installation#linux

[mbifeld]

We are currently waiting for the oras package to be available in Azure Linux. Once it is, please raise another issue to add the package to Cloud Shell.