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Running Cozy inside Docker


Cozycloud publish the cozy/cozy-stack docker production image to run the cozy-stack inside a docker container. It comes with everything bundled and preconfigured:

  • cozy-stack backend server
  • asynchronous konnector and services execution
  • preconfigured PDF and SVG thumbnail generation
  • Mail relay

Cozycloud also publish a docker-compose onfiguration to automatically setup a whole Cozy hosting infrastructure inside docker for selfhosting purposes with a CouchDB database as well as a frontend reverse proxy with on-demand TLS (automatic TLS certificate issuance).

This guide will help you selfhost your Cozy inside docker with docker-compose.


First you need a working docker installation with compose plugin.

Plense refer to official Docker installation guide for detailed instructions.

If you don’t work as root, add your unpriviledged user to the docker group. Refer to docker documentation on how to manage docker as a non-root user


docker-compose comes in two flavor. The first, v1, is a serapate python executable called docker-compose, the second, v2, is a plugin to the docker command called with docker compose (with a space instead of a dash between docker and compose).

In this documentation, we will use the newer docker compose version. If you still use the old separate executable, remplace all docker compose occurences with docker-compose

You also need a domain name or a subdomain under which all your cozy instances will reside. For example, if you want all your cozy instances under the domain.example domain. Configure your domain to point to your server in your domain’s DNS:

@   IN  A   <your server IP>
*   IN  A   <your server IP>

If you prefer tu use a subdomain of your main domain, in case you use it for anything else, simply create DNS entries pointing to your server for that subdomain. For exmaple if you want all your instances to be located under the cozy subdomain of your domain.example domain, you need to add a wildcard dns entry to your server like this:

cozy      IN  A   <your server IP>
*.cozy    IN  A   <your server IP>

Clone cozy-stack docker-compose repository

sudo git clone /opt/cozy
sudo chown -R `whoami`: /opt/cozy


Copy the configuration file env.template file to .env

cd /opt/cozy
cp env.example .env

and edit this .env file to configure your environment.

You should at least edit the following variables:

  • DOMAIN: The domain under which all your instances will be served. In our example, it’s domain.example or cozy.domain.example if you use a subdomain.
  • ACME_EMAIL: The email under which you want the TLS certificates to be issued with Let’s Encrypt
  • COUCHDB_PASSWORD: Generate and define a strong password for cozy-stack to connect to CouchDB
  • COZY_ADMIN_PASSPHRASE: The cozy-stack administrative password. Generate and define a strong admin password. If unset a random password will be chosen and shown in stack logs. If you want cozy-stack cli to ask for the password everytime, you can undefine this variable and restart container after the first run

Starting the environment

You can then start with

cd /opt/cozy
docker-compose up -d

Create instance

To execute cozy-stack commands inside the docker container, you can use the provided script that executes the cozy-stack command inside the docker container with provided arguments.

You can execute any cozy-stack command by simply replacing cozy-stack with ./

For example:

cd /opt/cozy
./ status

To create your first instance:

cd /opt/cozy
./ instances add \
    --apps home,banks,contacts,drive,notes,passwords,photos,settings,store \
    --email "" \
    --locale fr \
    --tz "Europe/Paris" \
    --passphrase YourStrongP@ssw0rd \

And then direct your browser to https://myinstance.domain.example.

The first time you access an application it will take a handful of seconds for the Caddy reverse proxy to automatically generate the TLS certificate.

All data will be stored in a volumes subdirectory. You can backup them.

Going further


You can list running containers with their state with

cd /opt/cozy
docker compose ps

In case something gets wrong, you can access logs from docker compose.

cozy-stack logs

cd /opt/cozy
docker compose logs stack

Caddy reverse proxy

cd /opt/cozy
docker compose logs caddy

CouchDB logs

cd /opt/cozy
docker compose logs couchdb

Stopping environment

Simply run

cd /opt/cozy
docker compose down


To upgrade to latest version, you need to stop the whole environment, pull the new images and restart it. Carefully plan the upgrade as it will lead to service interruption during the upgrade.

cd /opt/cozy
docker compose down
git pull
docker compose pull
docker compose up -d