HTTPS cert / key args don't work via CLI

[wbobeirne]

• Operating System: OSX
• Node Version: 8.9.4
• NPM Version: 6.0.1
• webpack Version: 4.8.3
• webpack-serve Version: 1.0.2

This issue is for a:

• bug
• feature request
• modification request

Code

CLI Command

  $ webpack-serve ./webpack.config.js --https-cert ./certificate.pem --https-key ./key.pem

webpack.config.js

N/A

Expected Behavior

Webpack serve starts with an HTTPS server

Actual Behavior

The following error:

An error was thrown while starting webpack-serve.
{ Error: error:0906D06C:PEM routines:PEM_read_bio:no start line

This is because key and cert are supposed to be the contents of the files, but when passed via CLI, https is sent the file paths, not the contents of the file. There'll need to be some additional handling of these options to read the content of the files.

How Do We Reproduce?

Specify https-cert and https-key on the command line.