Rewrite the packer file to make a reusable bash script for any linux server

[Julusian]

Might need some optionally interactive portions, or something

[kjetilpp]

is it possible to install 2.x version instead of 3.x when running the install script? can't find any documentation on how to install previous versions or downgrade

[kjetilpp]

@Julusian can you help?

[Julusian]

I think it will be as simple as installing from that script, then running:

• sudo git clone https://github.com/bitfocus/companion.git /usr/local/src/companion (get a copy of the v2 code, and tell the updater to run in v2 mode)
• sudo companion-update (perform an update to another v2 version, and do the necessary tasks to make it runnable)
• sudo rm -R /home/companion/.config/companion-nodejs/ (remove the empty v3 config, so that when you do update to v3 it will import your v2 config)

I havent tested this so it could break in many ways, but it might work