loki: small docs on logging driver

docker-compose-apps.yaml

@@ -1,7 +1,7 b''
 version: '3.9'
 
 x-logging: &custom-logging
-  # docker plugin install grafana/loki-docker-driver:latest --alias loki --grant-all-permissions
+  # docker plugin install grafana/loki-docker-driver:2.7.1 --alias loki --grant-all-permissions
   # NOTE: loki logging driver ONLY works for host type networks...
   driver: loki
   options:

docker-compose-base.yaml

@@ -3,8 +3,12 b" version: '3.9'"
 ## Shared base stuff for all compose files in stack
 
 x-logging: &custom-logging
-  # docker plugin install grafana/loki-docker-driver:latest --alias loki --grant-all-permissions
+  # Install loki plugin
+  # docker plugin install grafana/loki-docker-driver:2.7.1 --alias loki --grant-all-permissions
   # NOTE: loki logging driver ONLY works for host type networks...
+  # To cleanly uninstall the plugin, disable and remove it
+  # docker plugin disable loki --force && docker plugin rm loki
+  # debug: sudo journalctl -u docker.service | grep loki
   driver: loki
   options:
     loki-url: "http://loki:3100/loki/api/v1/push"

docker-compose-router.yaml

@@ -1,7 +1,7 b''
 version: '3.9'
 
 x-logging: &custom-logging
-  # docker plugin install grafana/loki-docker-driver:latest --alias loki --grant-all-permissions
+  # docker plugin install grafana/loki-docker-driver:2.7.1 --alias loki --grant-all-permissions
   # NOTE: loki logging driver ONLY works for host type networks...
   driver: loki
   options:

docker-compose-services.yaml

@@ -1,7 +1,7 b''
 version: '3.9'
 
 x-logging: &custom-logging
-  # docker plugin install grafana/loki-docker-driver:latest --alias loki --grant-all-permissions
+  # docker plugin install grafana/loki-docker-driver:2.7.1 --alias loki --grant-all-permissions
   # NOTE: loki logging driver ONLY works for host type networks...
   driver: loki
   options: