add section about existing ideas for new community containers

Signed-off-by: Simon L <[email protected]>

community-containers/readme.md

@@ -13,3 +13,6 @@ Afterwards, you might want to add additional community containers to the default
 
 ## How to add containers?
 Simply submit a PR by creating a new folder in this directory: https://github.com/nextcloud/all-in-one/tree/main/community-containers with the name of your container. It must include a json file with the same name and with correct syntax and a readme.md with additional information. You might get inspired by caddy, fail2ban, local-ai, plex, pi-hole or vaultwarden (subfolders in this directory). For a full-blown example of the json file, see https://github.com/nextcloud/all-in-one/blob/main/php/containers.json. The json-schema that it validates against can be found here: https://github.com/nextcloud/all-in-one/blob/main/php/containers-schema.json.
+
+### Is there a list of ideas for new community containers?
+Yes, see [this list](https://github.com/nextcloud/all-in-one/discussions/categories/ideas?discussions_q=is%3Aopen+category%3AIdeas+label%3A%22help+wanted%22) for already existing ideas for new community containers. Feel free to pick one up and add it to this folder by following the instructions above.