Avoid unnecessary build of Showcase

[christophe-f]

What do you want to improve?

We should build Showcase only when the code is updated. Not the Techdocs documentation.

What is the current behavior?

We are building Showcase everytime there is a code change.

What is the new behavior?

Don't trigger a build if the change is in the docs folder. The docs will be generate with another GitHub Action

⚠️ Is this a breaking change?

Put an x in the boxes that apply

• Yes
• No
• Don't know