feat(self-hosted): make analytics optional in compose (#45327)

docker/.env.example

@@ -68,6 +68,8 @@ VAULT_ENC_KEY=your-32-character-encryption-key
 PG_META_CRYPTO_KEY=your-encryption-key-32-chars-min
 
 # Analytics - API tokens for log ingestion/querying, and for management
+# If Logflare has to be externally exposed - configure securely!
+# Used in the docker-compose.logs.yml override.
 LOGFLARE_PUBLIC_ACCESS_TOKEN=your-super-secret-and-long-logflare-key-public
 LOGFLARE_PRIVATE_ACCESS_TOKEN=your-super-secret-and-long-logflare-key-private
 
@@ -300,18 +302,24 @@ PGRST_DB_EXTRA_SEARCH_PATH=public
 
 
 ############
-# Analytics - Configuration for Logflare
+# Logs and Analytics
 ############
 
-# Check the LOGFLARE_* access token configuration _above_.
-# If Logflare has to be externally exposed - configure securely!
+## Vector log collection and routing
 
 # Docker socket location - required for proper Vector operation
 DOCKER_SOCKET_LOCATION=/var/run/docker.sock
 # For Podman use the following:
 # DOCKER_SOCKET_LOCATION=/run/podman/podman.sock
 
+## Analytics (Logflare)
+
+# Check the LOGFLARE_* access token configuration _above_.
+# If Logflare has to be externally exposed - configure securely!
+
 # Google Cloud Project details
+# Documentation:
+# https://supabase.com/docs/reference/self-hosting-analytics/introduction
 GOOGLE_PROJECT_ID=GOOGLE_PROJECT_ID
 GOOGLE_PROJECT_NUMBER=GOOGLE_PROJECT_NUMBER