fix(collabora): run as cool user

collabora/rootfs/etc/services.d/collabora/run

@@ -0,0 +1,21 @@
+#!/usr/bin/with-contenv bashio
+# shellcheck shell=bash
+set -e
+
+if bashio::config.has_value 'domain'; then
+    domain="$(bashio::config 'domain')"
+    export domain
+fi
+
+if bashio::config.has_value 'username'; then
+    username="$(bashio::config 'username')"
+    export username
+fi
+
+if bashio::config.has_value 'password'; then
+    password="$(bashio::config 'password')"
+    export password
+fi
+
+bashio::log.info "Starting Collabora Online..."
+exec s6-setuidgid cool /usr/bin/entrypoint.sh coolwsd