release_slack_notification.yml

name: Release slack notification

on:
  release:
    types: [published]

jobs:
  slackNotification:
    name: Slack Notification
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Slack Notification
        uses: tokorom/action-slack-incoming-webhook@main
        env:
          INCOMING_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK }}
        with:
          text: ${{ github.event.release.tag_name}} is published.
          blocks: |
            [
              {
                "type": "header",
                "text": {
                  "type": "plain_text",
                  "text": '${{ github.event.release.tag_name}} is published by ${{ github.actor }}! :rocket:'
                }
              },
              {
                "type": "section",
                "text": {
                  "type": "mrkdwn",
                  "text": ${{ toJSON(github.event.release.body) }}
                }
              },
              {
                "type": "section",
                "text": {
                  "type": "mrkdwn",
                  "text": "${{ github.event.release.html_url }}"
                }
              }
            ]