profile.linux: Auto-start Sway on TTY1 after login

.profile.linux

@@ -1 +1,15 @@
-export XDG_RUNTIME_DIR=${XDG_RUNTIME_DIR:-/tmp/runtime-`id -u`}
+#!/usr/bin/env bash
+
+# Make compositor behave on Alpine
+if [ -z  "$XDG_RUNTIME_DIR" ]; then
+    export XDG_RUNTIME_DIR=/tmp/runtime-$UID
+    mkdir -p /tmp/runtime-$UID
+
+    export XDG_SESSION_TYPE=wayland
+    export XDG_CURRENT_DESKTOP=sway
+    export LIBSEAT_BACKEND=seatd
+
+    if [ -z "$WAYLAND_DISPLAY" ] && [ "$(tty)" == '/dev/tty1' ]; then
+        exec dbus-run-session sway -d |& tee /tmp/sway-$UID.log
+    fi
+fi