Wayfire and greetd

[Jorysm]

I have Alpine linux and wayfire installed using wf-install. Help me to configure automatic login to wayfire when booting system using greetd. Wayfire is started by the command /opt/wayfire/bin/startwayfire. I tried to configure the login via greetd but I failed.
My steps:

1. Installed greetd and greetd-gtkgreet
2. Edited the file /etc/greetd/config.toml
   `
   [terminal]
   vt = 1

[default_session]
command = "wayfire -c ~/.config/wayfire.ini"
user = "greetd"
`
waifire -> simlink on /opt/wayfire/bin/startwayfire

but I get an error on the output
[wayland] error: XDG_RUNTIME_DIR is invalid or not set in the environment

When running wayfire manually, this error does not occur. In the home folder in .zprofile added
`
if [ -z "$XDG_RUNTIME_DIR" ]; then
XDG_RUNTIME_DIR="/tmp/$(id -u)-runtime-dir"

mkdir -pm 0700 "$XDG_RUNTIME_DIR"
export XDG_RUNTIME_DIR

fi
`

[liumingedwin]

Read the docs first.
Configuration section default_session is about the login screen gui. You need a greeter like gtkgreet, qtgreet and so on.
Search over the Arch Linux wiki for further information about greetd.