🐛 Fix config seed check and container env var mapping 🐛

Guard the /etc→/config seed on the primary config file rather
than dir-empty so a pre-existing volume with only subdirs (e.g.
custom/) does not prevent app.ini/daemon.json/default_config.yaml
from being seeded — fixing the gitea install-page regression.
Also wire CONTAINER_DEFAULT_DATABASE_TYPE, CONTAINER_PROTOCOL,
CONTAINER_WEB_SERVER_PROTOCOL, WEB_PORT/ENV_PORTS, and
DATABASE_DIR_SQLITE to the correct gitea init variables so all
REPLACE_* tokens in app.ini are substituted on first start.
- rootfs/usr/local/etc/docker/init.d/08-gitea.sh: seed guard
checks for app.ini; map CONTAINER_DEFAULT_DATABASE_TYPE →
GITEA_SQL_TYPE; map CONTAINER_PROTOCOL/WEB_PORT → SERVICE_*;
fix DATABASE_DIR and CUSTOM_PATH
- rootfs/usr/local/etc/docker/init.d/05-dockerd.sh: seed guard
checks for daemon.json
- rootfs/usr/local/etc/docker/init.d/zz-act_runner.sh: seed guard
checks for default_config.yaml

rootfs/usr/local/etc/docker/init.d/05-dockerd.sh
rootfs/usr/local/etc/docker/init.d/08-gitea.sh
rootfs/usr/local/etc/docker/init.d/zz-act_runner.sh

rootfs/usr/local/etc/docker/init.d/05-dockerd.sh

@@ -263,11 +263,11 @@ __run_precopy() {
 	# Define environment
 	local hostname=${HOSTNAME}
 	[ -d "/run/healthcheck" ] || mkdir -p "/run/healthcheck"
-	# Seed /config/$SERVICE_NAME from the baked /etc copy on first run,
+	# Seed /config/$SERVICE_NAME from the baked /etc copy if daemon.json is missing,
 	# then replace the /etc/$SERVICE_NAME directory with a symlink to /config/$SERVICE_NAME
 	# so both paths always resolve to the same processed config.
 	if [ -d "$ETC_DIR" ] && ! [ -L "$ETC_DIR" ]; then
-		if __is_dir_empty "$CONF_DIR"; then
+		if [ ! -f "$CONF_DIR/daemon.json" ]; then
 			mkdir -p "$CONF_DIR"
 			cp -Rf "$ETC_DIR/." "$CONF_DIR/" 2>/dev/null || true
 		fi