build: update docker config and refine s3s region handling (#1976)

Co-authored-by: houseme <housemecn@gmail.com>

.docker/observability/loki-config.yaml

@@ -17,16 +17,16 @@ auth_enabled: false
 server:
   http_listen_port: 3100
   grpc_listen_port: 9096
-  log_level: debug
+  log_level: info
   grpc_server_max_concurrent_streams: 1000
 
 common:
   instance_addr: 127.0.0.1
-  path_prefix: /tmp/loki
+  path_prefix: /loki
   storage:
     filesystem:
-      chunks_directory: /tmp/loki/chunks
-      rules_directory: /tmp/loki/rules
+      chunks_directory: /loki/chunks
+      rules_directory: /loki/rules
   replication_factor: 1
   ring:
     kvstore:
@@ -66,17 +66,3 @@ ruler:
 
 frontend:
   encoding: protobuf
-
-
-# By default, Loki will send anonymous, but uniquely-identifiable usage and configuration
-# analytics to Grafana Labs. These statistics are sent to https://stats.grafana.org/
-#
-# Statistics help us better understand how Loki is used, and they show us performance
-# levels for most users. This helps us prioritize features and documentation.
-# For more information on what's sent, look at
-# https://github.com/grafana/loki/blob/main/pkg/analytics/stats.go
-# Refer to the buildReport method to see what goes into a report.
-#
-# If you would like to disable reporting, uncomment the following lines:
-#analytics:
-#  reporting_enabled: false