Add support of overleaf as community container

community-containers/overleaf/overleaf.json

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+{
+  "aio_services_v1": [
+    {
+      "container_name": "nextcloud-aio-overleaf-redis",
+      "display_name": "Overleaf Redis",
+      "documentation": "https://github.com/nextcloud/all-in-one/tree/main/community-containers/overleaf",
+      "image": "redis",
+      "image_tag": "7",
+      "internal_port": "6379",
+      "restart": "unless-stopped",
+      "expose": [
+        "6379"
+      ],
+      "environment": [
+        "TZ=%TIMEZONE%"
+      ],
+      "volumes": [
+        {
+          "source": "nextcloud_aio_overleaf_redis",
+          "destination": "/data",
+          "writeable": true
+        }
+      ]
+    },
+    {
+      "container_name": "nextcloud-aio-overleaf-mongo",
+      "display_name": "Overleaf MongoDB",
+      "documentation": "https://github.com/nextcloud/all-in-one/tree/main/community-containers/overleaf",
+      "image": "mongo",
+      "image_tag": "5",
+      "internal_port": "27017",
+      "restart": "unless-stopped",
+      "expose": [
+        "27017"
+      ],
+      "environment": [
+        "TZ=%TIMEZONE%"
+      ],
+      "volumes": [
+        {
+          "source": "nextcloud_aio_overleaf_mongo",
+          "destination": "/data/db",
+          "writeable": true
+        }
+      ],
+      "backup_volumes": [
+        "nextcloud_aio_overleaf_mongo"
+      ]
+    },
+    {
+      "container_name": "nextcloud-aio-overleaf",
+      "display_name": "Overleaf",
+      "documentation": "https://github.com/nextcloud/all-in-one/tree/main/community-containers/overleaf",
+      "image": "sharelatex/sharelatex",
+      "image_tag": "latest",
+      "internal_port": "80",
+      "restart": "unless-stopped",
+      "depends_on": [
+        "nextcloud-aio-overleaf-mongo",
+        "nextcloud-aio-overleaf-redis"
+      ],
+      "ports": [
+        {
+          "ip_binding": "%APACHE_IP_BINDING%",
+          "port_number": "8050",
+          "protocol": "tcp"
+        }
+      ],
+      "environment": [
+        "TZ=%TIMEZONE%",
+        "SHARELATEX_MONGO_URL=mongodb://nextcloud-aio-overleaf-mongo:27017/sharelatex",
+        "SHARELATEX_REDIS_HOST=nextcloud-aio-overleaf-redis",
+        "SHARELATEX_REDIS_PORT=6379",
+        "SHARELATEX_APP_NAME=Overleaf"
+      ],
+      "volumes": [
+        {
+          "source": "nextcloud_aio_overleaf",
+          "destination": "/var/lib/sharelatex",
+          "writeable": true
+        }
+      ],
+      "backup_volumes": [
+        "nextcloud_aio_overleaf",
+        "nextcloud_aio_overleaf_mongo"
+      ],
+      "nextcloud_exec_commands": [
+        "echo 'Installing integration_overleaf app...'",
+        "php /var/www/html/occ app:install integration_overleaf",
+        "php /var/www/html/occ app:enable integration_overleaf",
+        "echo 'Configuring integration_overleaf base_url...'",
+        "php /var/www/html/occ config:app:set integration_overleaf base_url --value 'http://%NC_DOMAIN%:8050'"
+      ]
+    }
+  ]
+}

community-containers/overleaf/readme.md

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+## Overleaf (Community Edition)
+This community container deploys Overleaf CE with its required MongoDB and Redis services.
+
+### Notes
+- After adding and starting the container, you can directly visit http://ip.address.of.server:8050/ to access your new Overleaf instance.
+- To access Overleaf outside your local network with HTTPS, set up a reverse proxy in front of AIO. You can either follow the generic reverse proxy guide: https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md or use the community Caddy container which can be adjusted to forward a subdomain like `overleaf.$NC_DOMAIN` to port 8050 on this server.
+- Initial user/admin creation is handled inside Overleaf. This container does not integrate Overleaf authentication with Nextcloud users.
+- If you run a firewall (e.g., ufw), ensure port 8050 is allowed or that your reverse proxy can reach it locally.
+- The data directories for Overleaf and MongoDB are persisted and included in AIO backups automatically.
+- See https://github.com/nextcloud/all-in-one/tree/main/community-containers#community-containers for how to add it to the AIO stack.
+
+### Nextcloud integration (auto-config)
+When this container is added, AIO automatically:
+- Installs and enables the Nextcloud app `integration_overleaf`.
+- Sets its `base_url` to `http://%NC_DOMAIN%:8050` by default (reachable when accessing the server directly).
+
+If you publish Overleaf behind a reverse proxy on a subdomain (recommended), change the URL in Nextcloud accordingly, for example:
+```bash
+sudo docker exec --user www-data -it nextcloud-aio-nextcloud php /var/www/html/occ config:app:set integration_overleaf base_url --value "https://overleaf.%NC_DOMAIN%"
+```
+
+### Data and backups
+- Overleaf data: stored in the volume `nextcloud_aio_overleaf` (mounted at `/var/lib/sharelatex`).
+- MongoDB data: stored in the volume `nextcloud_aio_overleaf_mongo` (mounted at `/data/db`).
+- Both are included in AIO backup/restore. Redis data is ephemeral by design and not included.
+
+### Advanced configuration
+- The container uses the official `sharelatex/sharelatex` image and configures minimal required environment variables (MongoDB/Redis/Time zone). You can adjust Overleaf settings from the web UI afterwards.
+- If you plan to expose Overleaf publicly, consider setting up rate-limiting and fail2ban in front of it. See the community Fail2ban container: https://github.com/nextcloud/all-in-one/tree/main/community-containers/fail2ban
+
+### Repository
+https://github.com/overleaf/overleaf
+
+### Maintainer
+https://github.com/docjyj