Allow to keep the .webpack folder after bundling

[alfaproject]

This is a Feature Proposal

Description

I want to run a method in my handler after bundling is done, but before deploying. Currently, I can do it if I run serverless webpack, but I can't when doing serverless deploy because the .webpack folder gets deleted. ):

My package.json scripts to show what I mean:

{
  "scripts": {
    "extract-schema": "node -e \"require('./.webpack/service/dist/handler').saveSchema();\"",
    "deploy": "serverless deploy",
    "webpack": "serverless webpack && yarn extract-schema"
  }
}

Is there any way to keep the temporary folder?

P.S.: I've also tried to use packagerOptions.scripts, but it doesn't seem to work or maybe I'm doing something wrong.

Additional Data

• Serverless-Webpack Version you're using: 5.2.0
• Webpack version you're using: 4.26.1
• Serverless Framework Version you're using: 1.32.0
• Operating System: macOS 10.14.1

[HyperBrain]

Added with PR #469

[HyperBrain]

Released with 5.3.0