CryptPad docker

This repository has been created as part of an ongoing effort to separate docker from the CryptPad platform repo.

The officially recommended deployment method is to use the example.nginx.conf file provided by the core repo and to manage updates directly on the host system using git, npm (as provided by nvm) and bower.

Docker images and their supporting configuration files are provided as a community effort by those using them, with support provided by the core development team on a best-effort basis. Keep in mind that the core team neither uses nor tests Docker images, so your results may vary.

Migration

Please see the migration guide for further information on switching to this repository.

General notices

• Important: New images tagged nginx and nginx-alpine have been added to this repository. The docker-compose.yml and traefik2.yml examples files have been modified to use the nginx image because the legacy versions didn't provide Content-Security-Policy headers which is a requirement to properly expose CryptPad to the internet.
  It is recommended to use the promasu/cryptpad:nginx image (see CryptPad proxied by Nginx).

• Mounted files and folders for CryptPad have to be owned by userid 4001. It is possible you have to run sudo chown -R 4001:4001 filename. If your container engine uses namespacing to shift uids and gids in the containers, you need correct the uid and gid or to run the command from within the container.

Standalone CryptPad

Tags: latest and alpine
Files: Dockerfile and Dockerfile-alpine

This image provides CryptPad served by Node without certs or CSP. It is up to you to deploy it behind a reverse proxy as per CryptPad's devs recommendations (see Opening CryptPad to the Internet).
It is kept in order to avoid breaking existing deployment. If you already have a reverse proxy with CSP properly configured, you can keep using this image.
Otherwise you should use the nginx or nginx-alpine versions.

Usage

Run:

docker run -d -p 3000:3000 -p 3001:3001 promasu/cryptpad

Run with customizations:

docker run -d -p 3000:3000 -p 3001:3001 -v ${PWD}/customize:/cryptpad/customize promasu/cryptpad

Run with configuration:

docker run -d -p 3000:3000 -p 3001:3001 -v ${PWD}/config.js:/cryptpad/config/config.js promasu/cryptpad

Run with persistent data:

docker run -d -p 3000:3000 -p 3001:3001 -v ${PWD}/data/blob:/cryptpad/blob \
-v ${PWD}/data/block:/cryptpad/block -v ${PWD}/customize:/cryptpad/customize \
-v ${PWD}/data/data:/cryptpad/data -v ${PWD}/data/files:/cryptpad/datastore promasu/cryptpad

CryptPad proxied by Nginx

Tags: nginx and nginx-alpine
Files: Dockerfile-nginx and Dockerfile-nginx-alpine

This image provides CryptPad proxied by Nginx. It offers more configuration options than the standalone version (but will not run if the bare minimum options aren't set) and lets Nginx handle the different HTTP headers like CSP.
The docker-entrypoint.sh script copies Nginx configuration from the example provided in CryptPad repository (see file example.nginx.conf) and substitutes the deployment environment variables.

• With minimum settings, Nginx will listen for unencrypted HTTP2 requests on port 80. Most browsers won't be able to connect without a reverse proxy to upgrade the connection (also if you use Traefik, see this).
  To disable HTTP2 set the environment variable CPAD_HTTP2_DISABLE to true.

• If you'd prefer Nginx to terminate TLS connections, provide a fullchain certificate and a key and set CPAD_TLS_CERT and CPAD_TLS_KEY. Both variables MUST be set for the entrypoint script to set paths in config. You can also provide Diffie-Hellman parameters with CPAD_TLS_DHPARAM. If no dhparam.pem file is provided, it will be generated upon container start. Beware that this is a time consuming step.

Environment variables

Variables	Description	Required	Default
CPAD_MAIN_DOMAIN	CryptPad main domain FQDN	Yes	None
CPAD_SANDBOX_DOMAIN	CryptPad sandbox subdomain FQDN	Yes	None
CPAD_API_DOMAIN	CryptPad API subdomain FQDN	No	$CPAD_MAIN_DOMAIN
CPAD_FILES_DOMAIN	CryptPad files subdomain FQDN	No	$CPAD_MAIN_DOMAIN
CPAD_TRUSTED_PROXY	Trusted proxy address or CIDR	No	None
CPAD_REALIP_HEADER	Header to get client IP from (X-Real-IP or X-Forwarded-For)	No	X-Real-IP
CPAD_REALIP_RECURSIVE	Instruct Nginx to perform a recursive search to find client's real IP (on/off) (see ngx_http_realip_module)	No	off
CPAD_TLS_CERT	Path to TLS certificate file	No	None
CPAD_TLS_KEY	Path to TLS private key file	No	None
CPAD_TLS_DHPARAM	Path to Diffie-Hellman parameters file	No	/etc/nginx/dhparam.pem
CPAD_HTTP2_DISABLE	Disable HTTP2	No	false

Usage

Run with minimal settings:

docker run -d -e "CPAD_MAIN_DOMAIN=example.com" -e "CPAD_SANDBOX_DOMAIN=sandbox.example.com" -p 80:80 promasu/cryptpad:nginx

Run with configuration:

docker run -d -e "CPAD_MAIN_DOMAIN=example.com" -e "CPAD_SANDBOX_DOMAIN=sandbox.example.com" \
-v ${PWD}/config.js:/cryptpad/config/config.js -p 80:80 promasu/cryptpad:nginx

Run with TLS:

docker run -d -e "CPAD_MAIN_DOMAIN=example.com" -e "CPAD_SANDBOX_DOMAIN=sandbox.example.com" \
-e "CPAD_TLS_CERT=/path/to/cert.pem" -e "CPAD_TLS_KEY=/path/to/key.pem" \
-e "CPAD_TLS_DHPARAM=/path/to/dhparam.pem" -v ${PWD}/cert.pem:/path/to/cert.pem \
-v ${PWD}/key.pem:/path/to/key.pem -v ${PWD}/dhparam.pem:/path/to/dhparam.pem \
-p 443:443 promasu/cryptpad:nginx

Run behind a reverse proxy

docker run -d -e "CPAD_MAIN_DOMAIN=example.com" -e "CPAD_SANDBOX_DOMAIN=sandbox.example.com" \
-e "CPAD_TRUSTED_PROXY=10.0.0.0/8" -e "CPAD_REALIP_HEADER=X-Forwarded-For" \
-e "CPAD_REALIP_RECURSIVE=on" -p 80:80 promasu/cryptpad:nginx

Run with customizations:

docker run -d -e "CPAD_MAIN_DOMAIN=example.com" -e "CPAD_SANDBOX_DOMAIN=sandbox.example.com" \
-v ${PWD}/customize:/cryptpad/customize -p 80:80 promasu/cryptpad:nginx

Run with persistent data:

docker run -d -e "CPAD_MAIN_DOMAIN=example.com" -e "CPAD_SANDBOX_DOMAIN=sandbox.example.com" \
-v ${PWD}/data/blob:/cryptpad/blob -v ${PWD}/data/block:/cryptpad/block \
-v ${PWD}/customize:/cryptpad/customize -v ${PWD}/data/data:/cryptpad/data \
-v ${PWD}/data/files:/cryptpad/datastore -p 80:80 promasu/cryptpad:nginx

Docker-compose

Run:

docker-compose up

Run with traefik2 labels:

docker-compose -f docker-compose.yml -f traefik2.yml up

Know bugs

Use the Nginx version with Traefik

If Traefik is used as reverse proxy (e.g. to handle SSL certs) the CryptPad WebSocket is unreachable if Nginx listens with HTTP2.
A workaround is to disable HTTP2 by setting the CPAD_HTTP2_DISABLE environment variable.

Nginx version not working with some browser configurations

See [https://github.com/xwiki-labs/cryptpad/issues/633]