Updated CI az login to environment variables.

.github/workflows/ci-pipeline.yaml

@@ -26,14 +26,14 @@ jobs:
         with:
           terraform_version: 1.9.3
 
-      - name: Login to Azure
-        uses: azure/login@v1
-        with:
-          creds: ${{ secrets.AZURE_CREDENTIALS }}
-
       - name: Terraform Init
         run: terraform init -backend=true -backend-config="resource_group_name=rg-nhsbackup" -backend-config="storage_account_name=satfstate729585701" -backend-config="container_name=tfstate" -backend-config="key=terraform.tfstate"
         working-directory: infrastructure
+        env:
+          ARM_TENANT_ID: $(AZURE_TENANT_ID)
+          ARM_CLIENT_ID: $(AZURE_CLIENT_ID)
+          ARM_CLIENT_SECRET: $(AZURE_CLIENT_SECRET)
+          ARM_SUBSCRIPTION_ID: $(AZURE_SUBSCRIPTION_ID)
 
       - name: Terraform Validate
         run: terraform validate