custom action to send approval request to Slack

• Post a message in Slack with a "Aoorove" and "Reject" buttons.
• Clicking on "Approve" will execute next steps.
• Clicking on "Reject" will cause workflow to fail.

• First, create a Slack App and install in your workspace.
• Second, add chat:write and im:write to OAuth Scope on OAuth & Permissions page.
• Finally, Enable Socket Mode.

jobs:
  approval:
    runs-on: ubuntu-latest
    steps:
      - name: send approval
        uses: varu3/slack-approval@main
        env:
          SLACK_APP_TOKEN: ${{ secrets.SLACK_APP_TOKEN }}
          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
          SLACK_SIGNING_SECRET: ${{ secrets.SLACK_SIGNING_SECRET }}
          SLACK_CHANNEL_ID: ${{ secrets.SLACK_CHANNEL_ID }}
        timeout-minutes: 10

• Set environment variables

  • SLACK_APP_TOKEN

    • App-level tokens on Basic Information page. (starting with xapp- )

  • SLACK_BOT_TOKEN

    • Bot-level tokens on OAuth & Permissions page. (starting with xoxb- )

  • SLACK_SIGNING_SECRET

    • Signing Secret on Basic Information page.

  • SLACK_CHANNEL_ID

    • Channel ID for which you want to send approval.

• Set timeout-minutes

  • Set the time to wait for approval.