Update README.md, added configuration params info

README.md

@@ -1,9 +1,42 @@
 # Content
 + [Images storage service](#images-storage-service)
 + [Docs](#swagger-docs)
++ [Params info](#configuration-params-info)
+    + [Jaeger config](#jaeger-config)
+    + [Prometheus config](#prometheus-config)
 + [Author](#author)
 + [License](#license)
 
+# Configuration params info
+if supported values is empty, then any type values are supported
+
+| yml name | yml section | env name | param type| description | supported values |
+|-|-|-|-|-|-|
+| log_level   |      | LOG_LEVEL  |   string   |      logging level        | panic, fatal, error, warning, warn, info, debug, trace|
+| healthcheck_port   |      | HEALTHCHECK_PORT  |   string   |     port for healthcheck| any valid port that is not occupied by other services. The string should not contain delimiters, only the port number|
+| base_local_storage_path   |      | BASE_LOCAL_STORAGE_PATH  |   string   |path of images storage(relative or absolute path)||
+| max_image_size   |      | MAX_IMAGE_SIZE  |   int   |max image size in bytes| only positive values|
+| host   |  listen    | HOST  |   string   |  ip address or host to listen   |  |
+| port   |  listen    | PORT  |   string   |  port to listen   | The string should not contain delimiters, only the port number|
+| server_mode   |  listen    | SERVER_MODE  |   string   | Server listen mode, Rest API, gRPC or both | GRPC, REST, BOTH|
+|service_name|  prometheus    | PROMETHEUS_SERVICE_NAME | string |  service name, thats will show in prometheus  ||
+|server_config|  prometheus    |   | nested yml configuration  [metrics server config](#prometheus-config) | |
+|jaeger|||nested yml configuration  [jaeger config](#jaeger-config)|configuration for jaeger connection ||
+
+## Jaeger config
+
+|yml name| env name|param type| description | supported values |
+|-|-|-|-|-|
+|address|JAEGER_ADDRESS|string|ip address(or host) with port of jaeger service| all valid addresses formatted like host:port or ip-address:port |
+|service_name|JAEGER_SERVICE_NAME|string|service name, thats will show in jaeger in traces||
+|log_spans|JAEGER_LOG_SPANS|bool|whether to enable log scans in jaeger for this service or not||
+
+## Prometheus config
+|yml name| env name|param type| description | supported values |
+|-|-|-|-|-|
+|host|METRIC_HOST|string|ip address or host to listen for prometheus service||
+|port|METRIC_PORT|string|port to listen for  of prometheus service| any valid port that is not occupied by other services. The string should not contain delimiters, only the port number|
+
 # Docs
 [Swagger docs](swagger/docs/images_storage_service_v1.swagger.json)