sfp container should have community plugin preinstalled

[petter-eikeland]

Describe the bug
Copying issue from dxatscale#1444

Is it possible to get the community plugin preinstalled in the next release? 😇

Slack Message

To Reproduce
Steps to reproduce the behavior:
Try to publish site using sf community publish -n [MySite] -o [target-org]

Expected behavior
sf community publish command takes 2-4 seconds to execute as sf community plugin is preinstalled

Expected behavior
sf community publish command takes 3 minutes to execute as sf community plugin is not preinstalled

[dieffrei]

Hi @petter-eikeland, we want to keep this standard docker image as lightweight as possible. That is why this plugin is not installed automatically on SF CLi either.
(https://developer.salesforce.com/docs/atlas.en-us.sfdx_setup.meta/sfdx_setup/sfdx_setup_plugins_overview.htm)
For this case, I advice you to create a custom image.
If you need help with that, let me know!
CC: @azlam-abdulsalam