IDE Theme PNG files broken when opening Welcome Screen in HTTPS

[DJlee139]

Seeing failures to get the ide theme png files when on the welcome screen. When I test on my machine's localhost on http, everything seems to work fine but when testing on a docker container over https they fail to load. Everything else seems to be working fine aside from these, so I don't suspect it has something to do with my container or setup.

Steps to replicate:

1. Launch vs code over https
2. Go to welcome page
3. Select the theme tile (might need to select a different file first)

The other strange thing is that the other png files for other tiles seem to work so perhaps it's something with the extension that it pulls the themes from.