Nextcloud with Docker compose

This repository contains a Docker compose file which can be used to easily create a Nextcloud instance.

Fully-featured Nextcloud instance backed by a MySQL database
Automatic SSL certificate issuance and renewal (using nginx-proxy-letsencrypt-companion)
Automated encrypted backups to Backblaze B2 using duplicacy-autobackup. Can be customized to use any storage backend supported by duplicacy (S3, Hubic, etc.).

Architecture

Here are the various containers involved.

nextcloud: the actual Nextcloud server
mysql: the database used by Nextcloud to store its configuration
reverse-proxy: a nginx reverse proxy in front of Nextcloud and doing SSL termination
letsencrypt-companion: an utility container which issues and renews SSL certificates
backups: an utility container which regularly backups the Nextcloud files and database

Usage

Follow the steps below. If you don't want any backups, just remove the backups: section in docker-compose.yml, jump to step 2, and ignore the instructions related to Backblaze B2.

Step 1: Create a Backblaze account and bucket

Sign up for a Backblaze account at https://www.backblaze.com/b2/sign-up.html.
Write down your Backblaze account ID and secret key (TODO) for later
Create a B2 bucket (e.g. christophetd-nextcloud-backups) and write down its name for later

Step 2: Point your subdomain to the appropriate machine

If you don't have any, spin up a VPS on any cloud provider (AWS EC2, Digital Ocean, OVH...). If you use the following referral link, you'll benefit from $10 of free credit on Digital Ocean (and I will get $25): https://m.do.co/c/1504134cd374.
Point your subdomain (e.g. nextcloud.christophetd.fr) to this newly created VPS

Step 3: Configuration

Edit the .env file, and change at least the following:

HOST: the hostname of your VPS (e.g. nextcloud.christophetd.fr)
B2_BUCKET: the name of the B2 bucket you created in step 1
B2_ID and B2_KEY: your B2 credentials from step 1
BACKUP_ENCRYPTION_KEY: set it to a random passphrase. It will be used to encrypt your backups before shipping them to Backblaze.

Step 4: Profit!

Run:

$ docker-compose up -d

You'll need to wait a few minutes on first launch, as there is some certificate generation involved. Then, you should be able to access your Nextcloud instance!

You can now define your administrator credentials and use Nextcloud.