Fix: add install command in docker compose

docker-compose.yml

@@ -2,6 +2,13 @@ services:
   canaille:
     build: .
     # image: git.shenanigans.cc/globuzma/canaille:latest
+    #
+    # README : For a first start you need to install all the schemas or LDAP models
+    # Uncomment the line below and do `docker compose up` once
+    # After this you can comment it again and start your container
+    #
+    # command: canaille install
+
     restart: unless-stopped
     ports:
       - 5000:5000