Fix setup (#194)

* Update autoseal finalization delay in environment documentation

* add simple explorer to docker configuration

* Update environment documentation to include Simple Explorer UI and Docker command for container removal

* Update Docker context for explorer service in environment documentation

Author: Maksandre

docs/build/sdk/v2/environment.md

@@ -36,7 +36,7 @@ services:
 
   explorer:
     build:
-      context: .
+      context: https://github.com/UniqueNetwork/unique-template.git#explorer
       dockerfile: Dockerfile
     platform: linux/amd64
     restart: unless-stopped