Support nodejs scripts?

[mmmoli]

YESSSS to this. Been waiting for ages.

Question regarding nodejs support.

How do you support nodejs scripts?
Or even running bash inside custom docker containers?

[ddneilson]

Hi Michele! Thanks for the enthusiasm :-)

For nodejs, node is just a command-line tool, so the Action could just look like:

onRun:
   command: node
   args:
   - <path to your app.js>

Where <path to your app.js> could be a reference to an embedded file (example), or a file on a shared filesystem.

Docker would be similar. The specification doesn't have a syntactic simplification to instruct it to run a command inside of a docker container, but docker is just something that you can run on the command-line so you could write a shell script to do it. Something like this as the script element of a Step could be a starting point:

actions:
  onRun:
    command: bash
    args: [ "{{Task.File.DockerTest}" ]
embeddedFiles:
- name: DockerTest
   type: TEXT
   data: |
     #!/bin/bash
     
     # Start docker running in the background (this could also be done with nohup and as part of an Environment's onEnter)
     docker run --rm --name test_run ubuntu:24.04  /bin/bash -c "while true; do sleep 10; done" &
     
     # Copy the shell script into the container
     docker container cp {{Task.File.ScriptToRun}} test_run:/tmp/script.sh

     # Run the script in the container
     docker exec test_run bash /tmp/script.sh

     # Stop the container (if it was started in an Environment onEnter, then this would be done in the onExit of the same Environment)
     docker stop test_run
     
- name: ScriptToRun
   type: TEXT
   data: |
     #!/bin/bash
     echo "Hi there from inside a docker container!"

I've also added a docker example that uses environments to the samples in this repository (the pull-request is here)