Docker

How to use the Docker image

A docker image is available on GitHub Packages. Pull the latest image:

docker pull ghcr.io/ledgerhq/speculos

And run the image with a few arguments from the root of the speculos project:

docker run -v $(pwd)/apps:/speculos/apps --publish 5900:5900 -it ledgerhq/speculos --display headless --vnc-port 5900 apps/btc.elf

• The app folder (here $(pwd)/apps/) is mounted thanks to -v
• The VNC server is available from the host thanks to --publish

The image can obviously run an interactive shell with --entrypoint /bin/bash.

Arguments

All the arguments which are supported by speculos.py can be passed on the Docker command-line. Don't forget to publish container's ports when required using -p:

docker run -it -v "$(pwd)"/apps:/speculos/apps \
-p 1234:1234 -p 40000:40000 -p 41000:41000 -p 42000:42000 -p5000:5000 \
ledgerhq/speculos --model nanos ./apps/btc.elf --sdk 1.6 --seed "secret" --display headless \
--apdu-port 40000 --vnc-port 41000 --button-port 42000

Debug

docker run -it -v "$(pwd)"/apps:/speculos/apps -p 1234:1234 -p 40000:40000 -p 41000:41000 -p 42000:42000 --entrypoint /bin/bash ledgerhq/speculos

docker-compose setup

docker-compose up [-d]

Default configuration is nanos / 1.6 / btc.elf / seed "secret"

Edit docker-compose.yml to configure port forwarding and environment variables that fit your needs.

Build

The following command-line can be used to create a docker image based on a local build:

docker build ./ -t speculos

Replace ledgerhq/speculos with speculos in the sections above to use this image.