Make Docker cleanup docs avoid table parsing

Use Docker filters and formatted image IDs so cleanup commands keep targeting LibreChat images without depending on human table columns.

Constraint: Docker images table output is not a stable parsing contract.

Rejected: Keep grep and awk parsing | column offsets can return the wrong field when output shape changes.

Confidence: high

Scope-risk: narrow

Directive: Prefer Docker CLI format/filter options over parsing human-readable tables.

Tested: rg confirmed old grep/awk cleanup pattern no longer appears; bun run build

Author: anh nguyen

content/docs/local/docker.mdx

@@ -132,7 +132,7 @@ docker compose down
 
 ```bash filename="Remove all existing docker images"
 # Linux/Mac
-docker images -a | grep "librechat" | awk '{print $3}' | xargs docker rmi
+docker images -a --filter "reference=*librechat*" --format "{{.ID}}" | xargs docker rmi
 
 # Windows (PowerShell)
 docker images -a --format "{{.ID}}" --filter "reference=*librechat*" | ForEach-Object { docker rmi $_ }

content/docs/remote/docker_linux.mdx

@@ -336,7 +336,7 @@ docker compose -f ./deploy-compose.yml down
 
 ```bash filename="Remove all existing docker images"
 # Linux/Mac
-docker images -a | grep "librechat" | awk '{print $3}' | xargs docker rmi
+docker images -a --filter "reference=*librechat*" --format "{{.ID}}" | xargs docker rmi
 
 # Windows (PowerShell)
 docker images -a --format "{{.ID}}" --filter "reference=*librechat*" | ForEach-Object { docker rmi $_ }