diff --git a/.build_version b/.build_version
new file mode 100644
index 0000000..e69de29
diff --git a/Dockerfile b/Dockerfile
index bc263ee..c0f0c4b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -124,4 +124,6 @@ RUN chown -R app:app /app/tmp /app/log /app/storage
 USER app
 # Using variables in command list is not possible:
 # https://stackoverflow.com/questions/40454470/how-can-i-use-a-variable-inside-a-dockerfile-cmd
-CMD [ "rails", "server", "--binding", "0.0.0.0", "--no-daemon", "--port" , "3000" ]
\ No newline at end of file
+CMD [ "rails", "server", "--binding", "0.0.0.0", "--no-daemon", "--port" , "3000" ]
+
+RUN date -u +"%Y-%m-%d %H:%M:%s" >> .build_version
\ No newline at end of file
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index 3337c89..a43501c 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -18,5 +18,6 @@
     <main class="mt-3 container">  
       <%= yield %>
     </main>
+    <footer class="mt-3">Version: <%= l(File.mtime(Rails.root.join(".build_version")), format: :short) %>
   </body>
 </html>