Two Ways Building MS Teams Custom Connector with Logic Apps

actionable-message-card.json

{
  "@type": "MessageCard",
  "@context": "http://schema.org/extensions",
  "summary": "Website Published to Netlify",
  "sections": [
    {
      "activityImage": "https://raw.githubusercontent.com/devkimchi/Microsoft-Teams-Channel-Notification/master/images/published.png",
      "activityTitle": "Published: @{triggerBody()['name']}",
      "activitySubtitle": "[@{triggerBody()['url']}](@{triggerBody()['url']})",
      "activityText": "@{triggerBody()['published_at']}"
    }
  ]
}

adaptive-card.json

{
  "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
  "type": "AdaptiveCard",
  "version": "1.0",
  "speak": "Website Published to Netlify",
  "body": [
    {
      "type": "ColumnSet",
      "columns": [
        {
          "type": "Column",
          "items": [
            {
              "type": "Image",
              "style": "default",
              "url": "https://raw.githubusercontent.com/devkimchi/Microsoft-Teams-Channel-Notification/master/images/published.png",
              "size": "small"
            }
          ],
          "width": "auto"
        },
        {
          "type": "Column",
          "items": [
            {
              "type": "TextBlock",
              "weight": "bolder",
              "text": "Published: @{triggerBody().name}",
              "wrap": true
            },
            {
              "type": "TextBlock",
              "text": "[@{triggerBody().url}](@{triggerBody().url})",
              "wrap": true
            },
            {
              "type": "TextBlock",
              "text": "@{triggerBody().published_at}",
              "wrap": true,
              "isSubtle": true
            }
          ],
          "width": "stretch"
        }
      ]
    }
  ]
}