Change Container Image Names to FQDN in docker-compose examples

docker-compose.fpm-certbot.yml

@@ -33,14 +33,14 @@ services:
     environment:
       - "HOSTNAMES=www.example.com example.com"
   certbot:
-    image: certbot/certbot
+    image: docker.io/certbot/certbot
     restart: unless-stopped
     volumes:
       - ./certbot/conf:/etc/letsencrypt
       - ./certbot/www:/var/www/certbot
     entrypoint: "/bin/sh -c 'trap exit TERM; while :; do certbot renew; sleep 12h & wait $${!}; done;'"
   lime-db:
-    image: mysql:5.7
+    image: docker.io/mysql:5.7
     environment:
       - "MYSQL_USER=limesurvey"
       - "MYSQL_DATABASE=limesurvey"