Slack Notify pipe - Example of providing a simple text file as contents

[Will Marsman]

https://bitbucket.org/atlassian/slack-notify/src/master/

Currently, we're using the slack notify pipe in order to add additional context. This pipe provides a way of providing a simple message, or a Block Kit style message.

However, what we typically want to do is provide a multi-line plain-text file as part of the message.

Unfortunately, this is somewhat of a tricky thing to do, as the naive approach with the `MESSAGE` parameter and `PAYLOAD_FILES` can be difficult.

Example 1: using the MESSAGE parameter

- pipe: atlassian/slack-notify:1.0.2
  variables:
    WEBHOOK_URL: $SLACK_WEBHOOK_URL
    PRETEXT: 'Releasing!'
    MESSAGE: >
      $(cat output.txt)

I believe this does not work as output.txt ends up breaking interpretation of the yaml file.

Example 2: using the PAYLOAD_FILES parameter

Using this parameter requires massaging this multi-line file in order to get it to show up, and can be quite confusing without dropping into a full programming language.

My request

It would be nice if the documentation provided an example which demonstrates how to provide a simple multi-line text file as either a MESSAGE parameter or a the PAYLOAD_FILES, or add a new parameter to support the common case of wanting to provide a text file as a message in slack.

[Igor Stoyanov]

@Will Marsman  hi. Thanks for your suggestion.

To cover your case check this reference of how to attach file. 

Regards, Igor