updated the .env file, added env variables for image provider service

.env

@@ -1,5 +1,3 @@
-
-
 # Demo App version
 IMAGE_VERSION=1.9.0
 IMAGE_NAME=ghcr.io/open-telemetry/demo
@@ -18,7 +16,7 @@ TRACETEST_IMAGE_VERSION=v0.16.0
 TRACETEST_IMAGE=kubeshop/tracetest:${TRACETEST_IMAGE_VERSION}
 
 # Demo Platform
-ENV_PLATFORM=local
+ENV_PLATFORM=local 
 
 # OpenTelemetry Collector
 OTEL_COLLECTOR_HOST=otelcol
@@ -133,4 +131,4 @@ JAEGER_SERVICE_HOST=jaeger
 # Prometheus
 PROMETHEUS_SERVICE_PORT=9090
 PROMETHEUS_SERVICE_HOST=prometheus
-PROMETHEUS_ADDR=${PROMETHEUS_SERVICE_HOST}:${PROMETHEUS_SERVICE_PORT}
+PROMETHEUS_ADDR=${PROMETHEUS_SERVICE_HOST}:${PROMETHEUS_SERVICE_PORT}