Use config_export function instead of calling dokku as a subcommand

plugins/checks/check-deploy

@@ -36,6 +36,7 @@
 
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 source "$PLUGIN_PATH/common/functions"
+source "$PLUGIN_PATH/config/functions"
 
 APP="$1"; DOKKU_APP_CONTAINER_ID="$2"; DOKKU_APP_CONTAINER_TYPE="$3"; DOKKU_APP_LISTEN_PORT="$4"; DOKKU_APP_LISTEN_IP="$5"
 if [[ -z "$DOKKU_APP_LISTEN_PORT" ]] && [[ -f "$DOKKU_ROOT/$APP/PORT" ]]; then
@@ -51,8 +52,8 @@ fi
 
 
 # source global and in-app envs to get DOKKU_CHECKS_WAIT and any other necessary vars
-eval "$(dokku config --global $APP --export)"
-eval "$(dokku config $APP --export)"
+eval "$(config_export global)"
+eval "$(config_export app $APP)"
 
 # Wait this many seconds (default 5) for server to start before running checks.
 WAIT="${DOKKU_CHECKS_WAIT:-5}"