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This Docker micro-service image is developed and maintained by the Nextcloud community. Nextcloud GmbH does not offer support for this Docker image. When you are looking to get professional support, you can become an [enterprise](https://nextcloud.com/enterprise/) customer or use [Nextcloud All-in-One docker image](https://github.com/nextcloud/all-in-one#nextcloud-all-in-one) - as the name suggests, Nextcloud All-in-One provides easy deployment and maintenance of Nextcloud Hub included in this one Nextcloud instance.
The `apache` tag contains a full Nextcloud installation including an apache web server. It is designed to be easy to use and gets you running pretty fast. This is also the default for the `latest` tag and version tags that are not further specified.
The second option is a `fpm` container. It is based on the [php-fpm](https://hub.docker.com/_/php/) image and runs a fastCGI-Process that serves your Nextcloud page. To use this image it must be combined with any webserver that can proxy the http requests to the FastCGI-port of the container.
[](http://play-with-docker.com?stack=https://raw.githubusercontent.com/nextcloud/docker/8db861d67f257a3e9ac1790ea06d4e2a7a193a6c/stack.yml)
To use the fpm image, you need an additional web server, such as [nginx](https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html), that can proxy http-request to the fpm-port of the container. For fpm connection this container exposes port 9000. In most cases, you might want to use another container or your host as proxy. If you use your host you can address your Nextcloud container directly on port 9000. If you use another container, make sure that you add them to the same docker network (via `docker run --network <NAME> ...` or a `docker-compose` file). In both cases you don't want to map the fpm port to your host.
As the fastCGI-Process is not capable of serving static files (style sheets, images, ...), the webserver needs access to these files. This can be achieved with the `volumes-from` option. You can find more information in the [docker-compose section](#running-this-image-with-docker-compose).
By default, this container uses SQLite for data storage but the Nextcloud setup wizard (appears on first run) allows connecting to an existing MySQL/MariaDB or PostgreSQL database. You can also link a database container, e. g. `--link my-mysql:mysql`, and then use `mysql` as the database host on setup. More info is in the docker-compose section.
The Nextcloud installation and all data beyond what lives in the database (file uploads, etc.) are stored in the [unnamed docker volume](https://docs.docker.com/engine/tutorials/dockervolumes/#adding-a-data-volume) volume `/var/www/html`. The docker daemon will store that data within the docker directory `/var/lib/docker/volumes/...`. That means your data is saved even if the container crashes, is stopped or deleted.
A named Docker volume or a mounted host directory should be used for upgrades and backups. To achieve this, you need one volume for your database container and one for Nextcloud.
If you want to get fine grained access to your individual files, you can mount additional volumes for data, config, your theme and custom apps. The `data`, `config` files are stored in respective subfolders inside `/var/www/html/`. The apps are split into core `apps` (which are shipped with Nextcloud and you don't need to take care of) and a `custom_apps` folder. If you use a custom theme it would go into the `themes` subfolder.
If mounting additional volumes, you should note that data inside the main folder (`/var/www/html`) may be removed during installation and upgrades, unless listed in [upgrade.exclude](https://github.com/nextcloud/docker/blob/master/upgrade.exclude). You should consider:
- Confirming that [upgrade.exclude](https://github.com/nextcloud/docker/blob/master/upgrade.exclude) contains the files and folders that should persist during installation and upgrades; or
- Mounting storage volumes to locations outside of `/var/www/html`.
To use the [Nextcloud command-line interface](https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/occ_command.html) (aka. `occ` command):
The Nextcloud image supports auto configuration via environment variables. You can preconfigure everything that is asked on the install page on first run. To enable auto configuration, set your database connection via the following environment variables. You must specify all of the environment variables for a given database or the database environment variables defaults to SQLITE. ONLY use one database type!
As an alternative to passing sensitive information via environment variables, `_FILE` may be appended to the previously listed environment variables, causing the initialization script to load the values for those variables from files present in the container. See [Docker secrets](#docker-secrets) section below.
If you set any group of values (i.e. all of `MYSQL_DATABASE`, `MYSQL_USER`, `MYSQL_PASSWORD`, `MYSQL_HOST`), they will not be asked in the install page on first run. With a complete configuration by using all variables for your database type, you can additionally configure your Nextcloud instance by setting admin user and password (only works if you set both):
The install and update script is only triggered when a default command is used (`apache-foreground` or `php-fpm`). If you use a custom command you have to enable the install / update with
You might want to make sure the htaccess is up to date after each container update. Especially on multiple swarm nodes as any discrepancy will make your server unusable.
If you want to use Redis you have to create a separate [Redis](https://hub.docker.com/_/redis/) container in your setup / in your docker-compose file. To inform Nextcloud about the Redis container, pass in the following parameters:
-`SMTP_HOST` (not set by default): The hostname of the SMTP server.
-`SMTP_SECURE` (empty by default): Set to `ssl` to use SSL, or `tls` to use STARTTLS.
-`SMTP_PORT` (default: `465` for SSL and `25` for non-secure connections): Optional port for the SMTP connection. Use `587` for an alternative port for STARTTLS.
-`SMTP_AUTHTYPE` (default: `LOGIN`): The method used for authentication. Use `PLAIN` if no authentication is required.
-`SMTP_NAME` (empty by default): The username for the authentication.
-`SMTP_PASSWORD` (empty by default): The password for the authentication.
Check the [Nextcloud documentation](https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/email_configuration.html) for other values to configure SMTP.
Check the [Nextcloud documentation](https://docs.nextcloud.com/server/latest/admin_manual/configuration_files/primary_storage.html#simple-storage-service-s3) for more information.
-`OBJECTSTORE_SWIFT_CONTAINER_NAME`: Swift container (bucket) that Nextcloud should store the data in
Check the [Nextcloud documentation](https://docs.nextcloud.com/server/latest/admin_manual/configuration_files/primary_storage.html#openstack-swift) for more information.
-`PHP_MEMORY_LIMIT` (default `512M`) This sets the maximum amount of memory in bytes that a script is allowed to allocate. This is meant to help prevent poorly written scripts from eating up all available memory but it can prevent normal operation if set too tight.
-`PHP_UPLOAD_LIMIT` (default `512M`) This sets the upload limit (`post_max_size` and `upload_max_filesize`) for big files. Note that you may have to change other limits depending on your client, webserver or operating system. Check the [Nextcloud documentation](https://docs.nextcloud.com/server/latest/admin_manual/configuration_files/big_file_upload_configuration.html) for more information.
The apache image will replace the remote addr (IP address visible to Nextcloud) with the IP address from `X-Real-IP` if the request is coming from a proxy in `10.0.0.0/8`, `172.16.0.0/12` or `192.168.0.0/16` by default. If you want Nextcloud to pick up the server host (`HTTP_X_FORWARDED_HOST`), protocol (`HTTP_X_FORWARDED_PROTO`) and client IP (`HTTP_X_FORWARDED_FOR`) from a trusted proxy, then disable rewrite IP and add the reverse proxy's IP address to `TRUSTED_PROXIES`.
-`OVERWRITEWEBROOT` (empty by default): Set the absolute path of the proxy.
-`OVERWRITECONDADDR` (empty by default): Regex to overwrite the values dependent on the remote address.
Check the [Nexcloud documentation](https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/reverse_proxy_configuration.html) for more details.
Keep in mind that once set, removing these environment variables won't remove these values from the configuration file, due to how Nextcloud merges configuration files together.
The easiest way to get a fully featured and functional setup is using a `docker-compose` file. There are too many different possibilities to setup your system, so here are only some examples of what you have to look for.
At first, make sure you have chosen the right base image (fpm or apache) and added features you wanted (see below). In every case, you would want to add a database container and docker volumes to get easy access to your persistent data. When you want to have your server reachable from the internet, adding HTTPS-encryption is mandatory! See below for more information.
This version will use the apache image and add a mariaDB container. The volumes are set to keep your data persistent. This setup provides **no ssl encryption** and is intended to run behind a proxy.
When using the FPM image, you need another container that acts as web server on port 80 and proxies the requests to the Nextcloud container. In this example a simple nginx container is combined with the Nextcloud-fpm image and a MariaDB database container. The data is stored in docker volumes. The nginx container also needs access to static files from your Nextcloud installation. It gets access to all the volumes mounted to Nextcloud via the `volumes_from` option.The configuration for nginx is stored in the configuration file `nginx.conf`, that is mounted into the container. An example can be found in the examples section [here](https://github.com/nextcloud/docker/tree/master/.examples).
As an alternative to passing sensitive information via environment variables, `_FILE` may be appended to the previously listed environment variables, causing the initialization script to load the values for those variables from files present in the container. In particular, this can be used to load passwords from Docker secrets stored in `/run/secrets/<secret_name>` files. For example:
Currently, this is only supported for `NEXTCLOUD_ADMIN_PASSWORD`, `NEXTCLOUD_ADMIN_USER`, `MYSQL_DATABASE`, `MYSQL_PASSWORD`, `MYSQL_USER`, `POSTGRES_DB`, `POSTGRES_PASSWORD`, `POSTGRES_USER`, `REDIS_HOST_PASSWORD`, `SMTP_PASSWORD`, `OBJECTSTORE_S3_KEY`, and `OBJECTSTORE_S3_SECRET`.
If you set any group of values (i.e. all of `MYSQL_DATABASE_FILE`, `MYSQL_USER_FILE`, `MYSQL_PASSWORD_FILE`, `MYSQL_HOST`), the script will not use the corresponding group of environment variables (`MYSQL_DATABASE`, `MYSQL_USER`, `MYSQL_PASSWORD`, `MYSQL_HOST`).
Until here, your Nextcloud is just available from your docker host. If you want your Nextcloud available from the internet adding SSL encryption is mandatory.
We recommend using a reverse proxy in front of your Nextcloud installation. Your Nextcloud will only be reachable through the proxy, which encrypts all traffic to the clients. You can mount your manually generated certificates to the proxy or use a fully automated solution which generates and renews the certificates for you.
In our [examples](https://github.com/nextcloud/docker/tree/master/.examples) section we have an example for a fully automated setup using a reverse proxy, a container for [Let's Encrypt](https://letsencrypt.org/) certificate handling, database and Nextcloud. It uses the popular [nginx-proxy](https://github.com/jwilder/nginx-proxy) and [docker-letsencrypt-nginx-proxy-companion](https://github.com/JrCs/docker-letsencrypt-nginx-proxy-companion) containers. Please check the according documentations before using this setup.
When you first access your Nextcloud, the setup wizard will appear and ask you to choose an administrator account username, password and the database connection. For the database use `db` as host and `nextcloud` as table and user name. Also enter the password you chose in your `docker-compose.yml` file.
Updating the Nextcloud container is done by pulling the new image, throwing away the old container and starting the new one.
**It is only possible to upgrade one major version at a time. For example, if you want to upgrade from version 14 to 16, you will have to upgrade from version 14 to 15, then from 15 to 16.**
Since all data is stored in volumes, nothing gets lost. The startup script will check for the version in your volume and the installed docker version. If it finds a mismatch, it automatically starts the upgrade process. Don't forget to add all the volumes to your new container, so it works as expected.
A lot of people want to use additional functionality inside their Nextcloud installation. If the image does not include the packages you need, you can easily build your own image on top of it. Start your derived image with the `FROM` statement and add whatever you like.
The [examples folder](https://github.com/nextcloud/docker/blob/master/.examples) gives a few examples on how to add certain functionalities, like including the cron job, smb-support or imap-authentication.
If you use your own Dockerfile, you need to configure your docker-compose file accordingly. Switch out the `image` option with `build`. You have to specify the path to your Dockerfile. (in the example it's in the same directory next to the docker-compose file)
If you intend to use another command to run the image, make sure that you set `NEXTCLOUD_UPDATE=1` in your Dockerfile. Otherwise the installation and update will not work.
The `--pull` option tells docker to look for new versions of the base image. Then the build instructions inside your `Dockerfile` are run on top of the new image.
# Migrating an existing installation
You're already using Nextcloud and want to switch to docker? Great! Here are some things to look out for:
1. Define your whole Nextcloud infrastructure in a `docker-compose` file and run it with `docker-compose up -d` to get the base installation, volumes and database. Work from there.
2. Restore your database from a mysqldump (nextcloud\_db\_1 is the name of your db container)
