Application Shell Template does not work: index.html does not get used in production

[leangermany]

Description of the bug

The index.html file does not get used in production mode. I added a <script> to the head and in dev mode it works fine. When using mvn package -Pproduction the index.html does not contain any of my changes. In fact the default template is used.

Expected behavior

The /frontend/index.html is used in production mode.

Minimal reproducible example

1. Download a new default starter with an empty Flow page from start.vaadin.com
2. Change the index.html, remove all comments & add script
3. Execute mvn package -Pproduction
4. Execute the jar
5. Incpect the website in browser. No script is there and all comments are back (like <!-- This outlet div is where the views are rendered -->)

Versions

• Vaadin / Flow version: 24.5.7
• Java version: 17 & 21
• OS version: Win 10
• Browser version (if applicable): Chrome, Firefox
• Application Server (if applicable): starter default
• IDE (if applicable): VS Code

[Artur-]

I wonder if this is a problem that the production bundle is not being built at all but the default one is used. Then you should see

[INFO] Checking if a production mode bundle build is needed
[INFO] A production mode bundle build is not needed

in the build log

[Artur-]

If so, adding -Dvaadin.force.production.build=true should make it work

[leangermany]

[INFO] Checking if a production mode bundle build is needed
[INFO] A production mode bundle build is not needed

This is the case.

[leangermany]

If so, adding -Dvaadin.force.production.build=true should make it work

That did work! I added this to my pom:

<configuration>
       <forceProductionBuild>true</forceProductionBuild>
</configuration>