fix Build from scratch option

Author: davidkhala

purview/lineage/palsa/README.md

@@ -1,6 +1,6 @@
 # [Purview-ADB-Lineage-Solution-Accelerator (PALSA)](https://github.com/microsoft/Purview-ADB-Lineage-Solution-Accelerator)
 
-Build from scratch
+## Deploy option 1: Build from scratch
 ```
 git clone https://github.com/microsoft/Purview-ADB-Lineage-Solution-Accelerator.git
 cd ./Purview-ADB-Lineage-Solution-Accelerator/deployment/infra/

purview/lineage/palsa/demo-context.sh

@@ -1,27 +1,17 @@
 #!/bin/bash
 set -e
 az config set extension.dynamic_install_allow_preview=true
-rg=${rg:-"Purview-ADB-Lineage-Solution-Accelerator"} # resource_group
-purviewlocation=SoutheastAsia
-if ! az group exists --resource-group $rg; then
-        az group create --location $purviewlocation --resource-group $rg
-fi
 
-service_principal=${service_principal:-"Purview-ADB-Lineage-Solution-Accelerator"}
-subscription=$(curl https://raw.githubusercontent.com/davidkhala/azure-utils/refs/heads/main/cli/context.sh | bash -s subscription)
-credentialFile=".credential.json"
-
-if ! [ -f $credentialFile ]; then
-    # create service principal
-    az ad sp create-for-rbac --name $service_principal --role Reader --scopes "/subscriptions/$subscription" --query "{appId:appId, password:password}" > $credentialFile
-fi
+curl https://raw.githubusercontent.com/davidkhala/Microsoft/refs/heads/main/purview/lineage/palsa/common.sh -O
+source ./common.sh
+rm ./common.sh
 
 echo "export rg=$rg" > settings.sh
 echo "export purviewlocation=$purviewlocation" > settings.sh
 echo "export prefix=\"\"" > settings.sh
 
 echo "export tenantid=$(curl https://raw.githubusercontent.com/davidkhala/azure-utils/refs/heads/main/cli/context.sh | bash -s tenant)" > settings.sh
 
-echo "export clientid=$(jq -r ".appId" $credentialFile)" > settings.sh # Azure Service Principal secret ID
+echo "export clientid=$clientid" > settings.sh # Azure Service Principal secret ID
 
-echo "export clientsecret=$(jq -r ".password" $credentialFile)" > settings.sh # Azure Service Principal secret value
+echo "export clientsecret=$clientsecret" > settings.sh # Azure Service Principal secret value