n8n - Task runners (n8nio/runners) - (PREVIEW)

n8nio/runners image includes JavaScript runner, Python runner and Task runner launcher that connects to a Task Broker running on the main n8n instance when running in external mode. This image is to be launched as a sidecar container to the main n8n container.

Task runners are used to execute user-provided code in the Code Node, isolated from the n8n instance.

For official documentation, please see here.

For a distroless variant of this image, see here.

For development purposes only, see below.

Testing locally

1) Make a production build of n8n

pnpm run build:n8n

2) Build the task runners image

docker buildx build \\
  -f docker/images/runners/Dockerfile \\
  -t n8nio/runners \\
  .

3) Start n8n on your host machine with Task Broker enabled

N8N_RUNNERS_MODE=external \\
N8N_RUNNERS_AUTH_TOKEN=test \\
N8N_LOG_LEVEL=debug \\
pnpm start

4) Start the task runner container

docker run --rm -it \\
-e N8N_RUNNERS_AUTH_TOKEN=test \\
-e N8N_RUNNERS_LAUNCHER_LOG_LEVEL=debug \\
-e N8N_RUNNERS_TASK_BROKER_URI=http://host.docker.internal:5679 \\
-p 5680:5680 \\
n8nio/runners

If you need to add extra dependencies (custom image), follow these instructions.