proton: "ServiceSpec" pipeline: dockerfile: "Dockerfile" buildspecfile: "containerized-saas-application/buildspec.yml" totalwaves: 1 instances: - name: "tenantA-saas-app" environment: "tenantAEnv" spec: service_discovery_name: "t1.saasapp.com" load_balanced: true load_balanced_public: true image: "public.ecr.aws/nginx/nginx:stable"