Please supply firmware generation instructions

[mchangsp]

After I clone this project, how do I generate a firmware image for the ESP8266?

[Sander van Rossem]

Customize itho.yaml with you personal preferences.
ESP8266 is already specified, see https://github.com/jodur/ESPHOME-ITHO/blob/master/itho.yaml#L19-L20.

Use the ESPHome container to compile (or run) the firmware; https://esphome.io/guides/getting_started_command_line.html
I'll use Podman (Docker replacement) so the command will be

$ podman run --rm -v "${PWD}":/config -it esphome/esphome compile itho.yaml
$ ls itho/.pioenvs/itho/firmware.elf
  itho/.pioenvs/itho/firmware.elf