Updates user email notifications preference to 'onmention'

Closes #169.

roles/forgejo-dc/templates/docker-compose.yml.j2

@@ -50,6 +50,7 @@ services:
       - GITEA__attachment__MAX_SIZE=100
       - GITEA__cron__ENABLED=true
       - GITEA__cron__SCHEDULE=@every 8h00m
+      - GITEA__admin__DEFAULT_EMAIL_NOTIFICATIONS=onmention
     restart: unless-stopped
     networks:
       - forgejo

scripts/update-users-email-notifications-preferences.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+#
+# This script updates the 'email_notifications_preference' of some users to 'onmention' to prevent
+# large amounts of notification emails.
+#
+
+# Some useful comments for psql:
+# SELECT * FROM public.user WHERE public.user.lower_name = 'maxkratz';
+# UPDATE public.user SET email_notifications_preference = 'onmention' WHERE public.user.lower_name = 'maxkratz';
+
+# The actual script:
+
+declare -a users=(
+    "maxkratz"
+)
+
+for u in "${users[@]}"
+do
+    docker compose exec -it db psql -U forgejo -c "UPDATE public.user SET email_notifications_preference = 'onmention' WHERE public.user.lower_name = '$u';"
+done
+
+exit 0;