library/nextcloud

Note: the description for this image is longer than the Hub length limit of 25000, so has been trimmed. The full description can be found at https://github.com/docker-library/docs/tree/master/nextcloud/README.md. See also https://github.com/docker/hub-feedback/issues/238 and https://github.com/docker/roadmap/issues/475.

IMPORTANT NOTE

⚠️⚠️⚠️ This image is maintained by community volunteers and designed for expert use. For quick and easy deployment that supports the full set of Nextcloud Hub features, use the https://github.com/nextcloud/all-in-one#nextcloud-all-in-one maintained by Nextcloud GmbH.

Quick reference

• Maintained by:
  https://github.com/nextcloud/docker

• Where to get help:
  the Docker Community Slack, Server Fault, Unix & Linux, or Stack Overflow

Supported tags and respective Dockerfile links

• https://github.com/nextcloud/docker/blob/e0aa114db5f803b23a39f0233c5113f02e608f4c/32/apache/Dockerfile

• https://github.com/nextcloud/docker/blob/e0aa114db5f803b23a39f0233c5113f02e608f4c/32/fpm/Dockerfile

• https://github.com/nextcloud/docker/blob/e0aa114db5f803b23a39f0233c5113f02e608f4c/32/fpm-alpine/Dockerfile

• https://github.com/nextcloud/docker/blob/e0aa114db5f803b23a39f0233c5113f02e608f4c/33/apache/Dockerfile

• https://github.com/nextcloud/docker/blob/e0aa114db5f803b23a39f0233c5113f02e608f4c/33/fpm/Dockerfile

• https://github.com/nextcloud/docker/blob/e0aa114db5f803b23a39f0233c5113f02e608f4c/33/fpm-alpine/Dockerfile

Quick reference (cont.)

• Where to file issues:
  https://github.com/nextcloud/docker/issues?q=

• Supported architectures: (https://github.com/docker-library/official-images#architectures-other-than-amd64)
  https://hub.docker.com/r/amd64/nextcloud/, https://hub.docker.com/r/arm32v5/nextcloud/, https://hub.docker.com/r/arm32v6/nextcloud/, https://hub.docker.com/r/arm32v7/nextcloud/, https://hub.docker.com/r/arm64v8/nextcloud/, https://hub.docker.com/r/i386/nextcloud/, https://hub.docker.com/r/ppc64le/nextcloud/, https://hub.docker.com/r/riscv64/nextcloud/, https://hub.docker.com/r/s390x/nextcloud/

• Published image artifact details:
  https://github.com/docker-library/repo-info/blob/master/repos/nextcloud (https://github.com/docker-library/repo-info/commits/master/repos/nextcloud)
  (image metadata, transfer size, etc)

• Image updates:
  https://github.com/docker-library/official-images/issues?q=label%3Alibrary%2Fnextcloud
  https://github.com/docker-library/official-images/blob/master/library/nextcloud (https://github.com/docker-library/official-images/commits/master/library/nextcloud)

• Source of this description:
  https://github.com/docker-library/docs/tree/master/nextcloud (https://github.com/docker-library/docs/commits/master/nextcloud)

What is Nextcloud?

A safe home for all your data. Access & share your files, calendars, contacts, mail & more from any device, on your terms.

Nextcloud.com

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 customer or use https://github.com/nextcloud/all-in-one#nextcloud-all-in-one.

How to use this image

This image is designed to be used in a micro-service environment. There are two versions of the image you can choose from.

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 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.

Using the apache image

The apache image contains a webserver and exposes port 80. To start the container type:

console
$ docker run -d -p 8080:80 nextcloud

Now you can access Nextcloud at http://localhost:8080/ from your host system.

Using the fpm image

To use the fpm image, you need an additional web server, such as nginx, 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 compose.yaml file). In both cases you don't want to map the fpm port to your host.

console
$ docker run -d nextcloud:fpm

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.

Using an external database

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.

Persistent data

The Nextcloud installation and all data beyond what lives in the database (file uploads, etc.) are stored in the unnamed docker 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.

Nextcloud:

• /var/www/html/ folder where all Nextcloud data lives

console
$ docker run -d \
-v nextcloud:/var/www/html \
nextcloud

Database:

• /var/lib/mysql MySQL / MariaDB Data
• /var/lib/postgresql/data PostgreSQL Data

console
$ docker run -d \
-v db:/var/lib/mysql \
mariadb:10.6

Additional volumes

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.

Overview of the folders that can be mounted as volumes:

• /var/www/html Main folder, needed for updating
• /var/www/html/custom_apps installed / modified apps
• /var/www/html/config local configuration
• /var/www/html/data the actual data of your Nextcloud
• /var/www/html/themes/<YOUR_CUSTOM_THEME> theming/branding

If you want to use named volumes for all of these, it would look like this:

console
$ docker run -d \
-v nextcloud:/var/www/html \
-v apps:/var/www/html/custom_apps \
-v config:/var/www/html/config \
-v data:/var/www/html/data \
-v theme:/var/www/html/themes/<YOUR_CUSTOM_THEME> \
nextcloud

Custom volumes

If mounting additional volumes under /var/www/html, you should ***:

• Confirming that 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.

You should note that data inside the main folder (/var/www/html) will be overridden/removed during installation and upgrades, unless listed in https://github.com/nextcloud/docker/blob/master/upgrade.exclude. The additional volumes officially supported are already in that list, but custom volumes will need to be added by you. We suggest mounting custom storage volumes outside of /var/www/html and if possible read-only so that making this adjustment is unnecessary. If you must do so, however, you may build a custom image with a modified /upgrade.exclude file that incorporates your custom volume(s).

Using the Nextcloud command-line interface

To use the Nextcloud command-line interface (aka. occ command):

console
$ docker exec --user www-data CONTAINER_ID php occ

or for docker compose:

console
$ docker compose exec --user www-data app php occ

Auto configuration via environment variables

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!

SQLite:

• SQLITE_DATABASE Name of the database using sqlite

MYSQL/MariaDB:

• MYSQL_DATABASE Name of the database using mysql / mariadb.
• MYSQL_USER Username for the database using mysql / mariadb.
• MYSQL_PASSWORD Password for the database user using mysql / mariadb.
• MYSQL_HOST Hostname of the database server using mysql / mariadb.

PostgreSQL:

• POSTGRES_DB Name of the database using postgres.
• POSTGRES_USER Username for the database using postgres.
• POSTGRES_PASSWORD Password for the database user using postgres.
• POSTGRES_HOST Hostname of the database server using postgres.

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 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):

• NEXTCLOUD_ADMIN_USER Name of the Nextcloud admin user.
• NEXTCLOUD_ADMIN_PASSWORD Password for the Nextcloud admin user.

If you want, you can set the data directory, otherwise default value will be used.

• NEXTCLOUD_DATA_DIR (default: /var/www/html/data) Configures the data directory where nextcloud stores all files from the users.

One or more trusted domains can be set through environment variable, too. They will be added to the configuration after install.

• NEXTCLOUD_TRUSTED_DOMAINS (not set by default) Optional space-separated list of domains

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

• NEXTCLOUD_UPDATE (default: 0)

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.

• NEXTCLOUD_INIT_HTACCESS (not set by default) Set it to true to enable run occ maintenance:update:htaccess after container initialization.

If you want to use Redis you have to create a separate https://hub.docker.com/_/redis/ container in your setup / in your Compose file. To inform Nextcloud about the Redis container, pass in the following parameters:

• REDIS_HOST (not set by default) Name of Redis container
• REDIS_HOST_PORT (default: 6379) Optional port for Redis, only use for external Redis servers that run on non-standard ports.
• REDIS_HOST_PASSWORD (not set by default) Redis password

The use of Redis is recommended to prevent file locking problems. See the examples for further instructions.

To use an external SMTP server, you have to provide the connection details. To configure Nextcloud to use SMTP add:

• 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.
• MAIL_FROM_ADDRESS (not set by default): Set the local-part for the 'from' field in the emails sent by Nextcloud.
• MAIL_DOMAIN (not set by default): Set a different domain for the emails than the domain where Nextcloud is installed.

At least SMTP_HOST, MAIL_FROM_ADDRESS and MAIL_DOMAIN must be set for the configurations to be applied.

Check the Nextcloud documentation for other values to configure SMTP.

To use an external S3 compatible object store as primary storage, set the following variables:

• OBJECTSTORE_S3_BUCKET: The name of the bucket that Nextcloud should store the data in
• OBJECTSTORE_S3_REGION: The region that the S3 bucket resides in
• OBJECTSTORE_S3_HOST: The hostname of the object storage server
• OBJECTSTORE_S3_PORT: The port that the object storage server is being served over
• OBJECTSTORE_S3_KEY: AWS style access key
• OBJECTSTORE_S3_SECRET: AWS style secret access key
• OBJECTSTORE_S3_STORAGE_CLASS: The storage class to use when adding objects to the bucket
• OBJECTSTORE_S3_SSL (default: true): Whether or not SSL/TLS should be used to communicate with object storage server
• OBJECTSTORE_S3_USEPATH_STYLE (default: false): Not required for AWS S3
• OBJECTSTORE_S3_LEGACYAUTH (default: false): Not required for AWS S3
• OBJECTSTORE_S3_OBJECT_PREFIX (default: urn:oid:): Prefix to prepend to the fileid
• OBJECTSTORE_S3_AUTOCREATE (default: true): Create the container if it does not exist
• OBJECTSTORE_S3_SSE_C_KEY (not set by default): Base64 encoded key with a maximum length of 32 bytes for server side encryption (SSE-C)

Check the Nextcloud documentation for more information.

To use an external OpenStack Swift object store as primary storage, set the following variables:

• OBJECTSTORE_SWIFT_URL: The Swift identity (Keystone) endpoint
• OBJECTSTORE_SWIFT_AUTOCREATE (default: false): Whether or not Nextcloud should automatically create the Swift container
• OBJECTSTORE_SWIFT_USER_NAME: Swift username
• OBJECTSTORE_SWIFT_USER_PASSWORD: Swift user password
• OBJECTSTORE_SWIFT_USER_DOMAIN (default: Default): Swift user domain
• OBJECTSTORE_SWIFT_PROJECT_NAME: OpenStack project name
• OBJECTSTORE_SWIFT_PROJECT_DOMAIN (default: Default): OpenStack project domain
• OBJECTSTORE_SWIFT_SERVICE_NAME (default: swift): Swift service name
• OBJECTSTORE_SWIFT_REGION: Swift endpoint region
• OBJECTSTORE_SWIFT_CONTAINER_NAME: Swift container (bucket) that Nextcloud should store the data in

Check the Nextcloud documentation for more information.

To customize other PHP limits you can simply change the following variables:

• 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 for more information.

To customize Apache max file upload limit you can change the following variable:

• APACHE_BODY_LIMIT (default 1073741824 [1GiB]) This restricts the total size of the HTTP request body sent from the client. It specifies the number of bytes that are allowed in a request body. A value of 0 means unlimited. Check the Nextcloud documentation for more information.

Auto configuration via hook folders

There are 5 hooks

• pre-installation Executed before the Nextcloud is installed/initiated
• post-installation Executed after the Nextcloud is installed/initiated
• pre-upgrade Executed before the Nextcloud is upgraded
• post-upgrade Executed after the Nextcloud is upgraded
• before-starting Executed before the Nextcloud starts

To use the hooks triggered by the entrypoint script, either

• Added your script(s) to the individual of the hook folder(s), which are located at the path /docker-entrypoint-hooks.d in the container
• Use volume(s) if you want to use script from the host system inside the container, see example.

Note: Only the script(s) located in a hook folder (not sub-folders), ending with .sh and marked as executable, will be executed.

Example: Mount using volumes

yaml
...
  app:
    image: nextcloud:stable

    volumes:
      - ./app-hooks/pre-installation:/docker-entrypoint-hooks.d/pre-installation
      - ./app-hooks/post-installation:/docker-entrypoint-hooks.d/post-installation
      - ./app-hooks/pre-upgrade:/docker-entrypoint-hooks.d/pre-upgrade
      - ./app-hooks/post-upgrade:/docker-entrypoint-hooks.d/post-upgrade
      - ./app-hooks/before-starting:/docker-entrypoint-hooks.d/before-starting
...

Using the apache image behind a reverse proxy and auto configure server host and protocol

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.

• APACHE_DISABLE_REWRITE_IP (not set by default): Set to 1 to disable rewrite IP.
• TRUSTED_PROXIES (empty by default): A space-separated list of trusted proxies. CIDR notation is supported for IPv4.

If the TRUSTED_PROXIES approach does not work for you, try using fixed values for overwrite parameters.

• OVERWRITEHOST (empty by default): Set the hostname of the proxy. Can also specify a port.
• OVERWRITEPROTOCOL (empty by default): Set the protocol of the proxy, http or https.
• OVERWRITECLIURL (empty by default): Set the cli url of the proxy (e.g. [***]
• 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 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.

Running this image with Docker Compose

The easiest way to get a fully featured and functional setup is using a compose.yaml 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.

Base version - apache

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.

Make sure to pass in values for MYSQL_ROOT_PASSWORD and MYSQL_PASSWORD variables before you run this setup.

yaml
volumes:
  nextcloud:
  db:

services:
  db:
    image: mariadb:10.6
    restart: always
    command: --transaction-isolation=READ-COMMITTED --log-bin=binlog --binlog-format=ROW
    volumes:
      - db:/var/lib/mysql
    environment:
      - MYSQL_ROOT_PASSWORD=
      - MYSQL_PASSWORD=
      - MYSQL_DATABASE=nextcloud
      - MYSQL_USER=nextcloud

  app:
    image: nextcloud
    restart: always
    ports:
      - 8080:80
    links:
      - db
    volumes:
      - nextcloud:/var/www/html
    environment:
      - MYSQL_PASSWORD=
      - MYSQL_DATABASE=nextcloud
      - MYSQL_USER=nextcloud
      - MYSQL_HOST=db

Then run docker compose up -d, now you can access Nextcloud at http://localhost:8080/ from your host system.

Base version - FPM

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 https://github.com/nextcloud/docker/tree/master/.examples.

As this setup does not include encryption, it should be run behind a proxy.

Make sure to pass in values for MYSQL_ROOT_PASSWORD and MYSQL_PASSWORD variables before you run this setup.

yaml
volumes:
  nextcloud:
  db:

services:
  db:
    image: mariadb:10.6
    restart: always
    command: --transaction-isolation=READ-COMMITTED --log-bin=binlog --binlog-format=ROW
    volumes:
      - db:/var/lib/mysql
    environment:
      - MYSQL_ROOT_PASSWORD=
      - MYSQL_PASSWORD=
      - MYSQL_DATABASE=nextcloud
      - MYSQL_USER=nextcloud

...

**Note:** the description for this image is longer than the Hub length limit of 25000, so has been trimmed.  The full description can be found at https://github.com/docker-library/docs/tree/master/nextcloud/README.md.  See also https://github.com/docker/hub-feedback/issues/238 and https://github.com/docker/roadmap/issues/475.