fix oniguruma require

bestlong · bestlong · commit 964494255d18 · 2019-12-21T22:16:24.000+08:00
laradock#2407 laradock#2408
diff --git a/laravel-horizon/Dockerfile b/laravel-horizon/Dockerfile
@@ -29,6 +29,7 @@ RUN apk --update add wget \
   cyrus-sasl-dev \
   libgsasl-dev \
   supervisor \
+  oniguruma-dev \
   procps
 
 RUN docker-php-ext-install mysqli mbstring pdo pdo_mysql tokenizer xml pcntl
