Rasa X: Custom Pipline Element

[Deprecated] Rasa X Community Edition
2

I’m not in the Rasa X Team but I went through the same process as you are now ;). The Rasa blog on custom components describes the steps to take to add a component:

  • add it to the config.yml
  • add the component directory the PYTHONPATH

You need to convert those steps into a Dockerfile to build a custom container:

# Extend the official Rasa SDK image (change the version to whatever you need)
FROM rasa/rasa:1.8.2-full

# Switch to root user
USER root

# Add a folder to python path
ENV PYTHONPATH "${PYTHONPATH}:/app/my_custom_component"

# Do other stuff, e.g.: add python dependencies, etc.

# Switch back to a non-root user
USER 1001

Then:

  • Build the container: docker build . -t foobar:version
  • Copy the custom components to the rasa-x installation directory cp -r /code/dir/my_custom_component/* /etc/rasa/my_custom_component
  • Add a docker-compose.override.yml file to /etc/rasa and include the custom container (Note that the specific setup of the container depends on what you are trying to extend):

EDIT (fixed the docker-compose example):

services:
  rasa-worker:
    volumes:
      - ./directory/my_custom_component.py:/app/my_custom_component.py

docker-compose rasa-x, and you’re done!

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