⚡️(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.

bin/Tiltfile

@@ -20,7 +20,7 @@ docker_build(
 docker_build(
     'localhost:5001/impress-y-provider:latest',
     context='..',
-    dockerfile='../src/frontend/Dockerfile',
+    dockerfile='../src/frontend/servers/y-provider/Dockerfile',
     only=['./src/frontend/', './docker/', './.dockerignore'],
     target = 'y-provider',
     live_update=[