Add Heroku CD

Author: winwiz1

README.md

@@ -105,8 +105,8 @@ This arrangement brings a security benefit: The clients running inside a browser
 * Seamless debugging. Debug a minified/obfuscated, compressed production bundle and put breakpoints in its TypeScript code using both VS Code and Chrome DevTools. Development build debugging: put breakpoints in the client and backend code and debug both simultaneously using a single instance of VS Code.
 
 * Sample websites.
-    * [Demo - Full stack](https://crisp-react.winwiz1.com). Manual build.
-    * [Demo - Jamstack](https://crisp-react.pages.dev). Automated build.
+    * [Demo - Full stack](https://crisp-react.winwiz1.com). Automated build performed by Heroku.
+    * [Demo - Jamstack](https://crisp-react.pages.dev). Automated build performed by Cloudflare Pages.
     * [Production](https://virusquery.com). Based on Crisp React.
 
 ## Table of Contents

client/src/components/Overview.tsx

@@ -45,7 +45,10 @@ const Msg: React.FC = _props => {
   } else {
     return (
       <React.Fragment>
-        'Full stack' build option.
+        'Full stack' build option. It was deployed automatically
+        by a CD pipeline created by <a target="_blank" rel="noopener noreferrer"
+        href="https://heroku.com/">Heroku</a> in
+        response to a push into the repository.
       </React.Fragment>
     );
   }

heroku.yml

@@ -0,0 +1,3 @@
+build:
+  docker:
+    web: Dockerfile