diff --git a/Dockerfile b/Dockerfile
index 8446824..3fa827f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,6 +2,7 @@ FROM nginx:1.15.7-alpine
 
 RUN \
   apk add --no-cache \
+    supervisor \
     curl \
     php7 \
     php7-apcu \