GitHub Action that posts a message to a Slack channel

Optional The Slack auth token. This is only required if environment variable SLACK_BOT_TOKEN is not set.

Required The channel name to post to (example: #general)

Optional The timestamp ID of the parent message to reply to (e.g., the ts output from a previous Slack message call)

Required The message text to post. See Slack's documentation on formatting.

Notes:

• single quotes in your message must be escaped as \' due to how this input is consumed by bash (example: text: "This is a \'single quote\' test")
• environment variables will only be expanded if referenced using the env GitHub Action context ${{ env.MY_VAR }} format (example: text: "This is the value of MY_VAR: ${{ env.MY_VAR }}")

Optional Whether links in the message should be unfurled (default: true)

The timestamp ID of the message (can be used to make subsequent Slack messages a threaded reply)

- name: Post Slack message
  uses: ynab/slack-post-message-action@v1.4
  with:
    token: ${{ secrets.SLACK_API_TOKEN }}
    channel: "#general"
    text: ":tada: This is a test from the ${{ env.GITHUB_ACTION }} workflow! <https://github.com/ynab/slack-post-message-action|Action Documentation>"