Thank you for clarifying this. I was aware I could flash devices on my computer (I did a few times because a few of my boards ESP32-S2-Mini have to be flashed once by the Flash Download Tool from espressif). Maybe I’ll run the ESPHome WebUI on my computer or use the cli, I’ll see.
I’ll proceed to install the HA Core + HACS on a LXC container and see how it goes.