Add Redis caching

compose.yml

@@ -19,6 +19,7 @@ services:
       - NEXTCLOUD_TRUSTED_DOMAINS=${DOMAIN}
       - APACHE_DISABLE_REWRITE_IP=1
       - TRUSTED_PROXIES=traefik
+      - REDIS_HOST=cache
       - SMTP_HOST
       - MAIL_FROM_ADDRESS
       - MAIL_DOMAIN
@@ -88,6 +89,10 @@ services:
     entrypoint: /cron.sh
     deploy:
       labels: ["coop-cloud.${STACK_NAME}.cron.version=21.0.3-87bd33d3"]
+  cache:
+    image: redis:6.2.5-alpine
+    networks:
+      - internal
 secrets:
   db_root_password:
     external: true