Notification after each step
It would be useful to be able to set up notifications after each step. In our case, specifically, we would like to notify Slack after each completed step.
I've seen the library script that you can use to add a step to a deployment process to notify Slack, but that would mean notifying Slack only after a deployment is complete. Some of our deployments take a long time and we would like to be able to follow their progress in Slack, i.e. get OctopusDeploy to notify Slack after each individual step.
The Slack notification is built on a custom step template. You should be able to modify it to suit your needs quite easily!