fix: deploy.ps1 Dockerfile path and remove eastus from checkquota defaults

- Fix deploy.ps1: use src\backend\ApiApp.Dockerfile instead of src\WebApp.Dockerfile
- Remove eastus from checkquota.sh default regions (not in allowed azureAiServiceLocation values)
- Add missing allowed regions to checkquota defaults

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Pavan-Microsoft

scripts/checkquota.sh

@@ -40,7 +40,7 @@ IMAGE_MODEL_MIN_CAPACITY="${IMAGE_MODEL_MIN_CAPACITY:-1}"
 if [[ -n "$AZURE_REGIONS" ]]; then
     IFS=', ' read -ra REGIONS <<< "$AZURE_REGIONS"
 else
-    REGIONS=("westus3" "eastus2" "uaenorth" "swedencentral" "australiaeast" "eastus" "uksouth" "japaneast")
+    REGIONS=("westus3" "eastus2" "uaenorth" "swedencentral" "australiaeast" "uksouth" "japaneast" "canadaeast" "koreacentral" "polandcentral" "switzerlandnorth")
 fi
 
 # Map image model choice to Azure quota model name

scripts/deploy.ps1

@@ -96,7 +96,7 @@ if ($continue -eq "y" -or $continue -eq "Y") {
     Write-Host "Step 1: Building and pushing backend container..." -ForegroundColor Green
     Write-Host "==========================================" -ForegroundColor Green
 
-    Set-Location "$ProjectDir\src"
+    Set-Location "$ProjectDir\src\backend"
 
     # Login to ACR
     az acr login --name $AcrName
@@ -105,7 +105,7 @@ if ($continue -eq "y" -or $continue -eq "Y") {
     az acr build `
         --registry $AcrName `
         --image "contentgen-backend:$ImageTag" `
-        --file WebApp.Dockerfile `
+        --file ApiApp.Dockerfile `
         .
 
     Write-Host "✓ Container built and pushed to $AcrName.azurecr.io/contentgen-backend:$ImageTag" -ForegroundColor Green