⚡️(docker) improve y-provider image

Improve y-provider image by having the
node_modules as small as possible.
We move split the Dockerfile and
add it to the y-provider folder,
it will be easier to read and maintain.

CHANGELOG.md

@@ -14,6 +14,10 @@ and this project adheres to
 - ✨(backend) add server-to-server API endpoint to create documents #467
 - ✨(email) white brand email #412
 
+## Changed
+
+- ⚡️(docker) improve y-provider image #422
+
 
 ## [1.9.0] - 2024-12-11