Merge pull request #153 from nktnet1/env-coolify-resource-uuid

feat(env): documented COOLIFY_RESOURCE_UUID

Author: andrasbacsai

src/content/docs/knowledge-base/environment-variables.mdx

@@ -74,6 +74,10 @@ URL(s) of the application.
 
 Branch name of the source code.
 
+### `COOLIFY_RESOURCE_UUID`
+
+Unique resource identifier generated by Coolify.
+
 ### `COOLIFY_CONTAINER_NAME`
 
 Name of the container generated by Coolify.