Replace Dockerfile.backend with src/WebApp.Dockerfile in build scripts for Docker image creation

Author: Vemarthula-Microsoft

Dockerfile.backend

@@ -37,7 +37,7 @@ $imageName = "document-generation/backend"
 $fullImageName = "${registryName}.azurecr.io/${imageName}:${imageTag}"
 
 Write-Host "Building Docker image: $fullImageName" -ForegroundColor Yellow
-docker build -f Dockerfile.backend -t $fullImageName --platform linux/amd64 .
+docker build -f src/WebApp.Dockerfile -t $fullImageName --platform linux/amd64 ./src
 if ($LASTEXITCODE -ne 0) {
     Write-Host "ERROR: Docker build failed" -ForegroundColor Red
     exit 1

scripts/build-push-acr.ps1

@@ -36,7 +36,7 @@ IMAGE_NAME="document-generation/backend"
 FULL_IMAGE_NAME="${REGISTRY_NAME}.azurecr.io/${IMAGE_NAME}:${IMAGE_TAG}"
 
 echo "Building Docker image: $FULL_IMAGE_NAME"
-docker build -f Dockerfile.backend -t "$FULL_IMAGE_NAME" --platform linux/amd64 .
+docker build -f src/WebApp.Dockerfile -t "$FULL_IMAGE_NAME" --platform linux/amd64 ./src
 if [ $? -ne 0 ]; then
     echo "ERROR: Docker build failed"
     exit 1