[Etherpad] Oops ; same volume mounted for both instances

pica-etherpad/docker-compose.yml

@@ -100,7 +100,7 @@ services:
     cpus: "0.40"
     pids_limit: 1024
     volumes:
-      - etherpad-db:/var/lib/mysql
+      - etherpad-week-db:/var/lib/mysql
     env_file: ./secrets/etherpad-week-db.secrets
     restart: unless-stopped
     # See https://stackoverflow.com/questions/41134785/how-to-solve-mysql-warning-innodb-page-cleaner-1000ms-intended-loop-took-xxx