diff --git a/Dockerfile b/Dockerfile
index 3deef80396b8284760d9ddf2a315adca0ef7e055..c26785f63ed4cd1b4b233dcf763ac577b4c0e8c4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,7 @@ ARG REDIS_DOWNLOAD_URL="http://download.redis.io/"
 ARG REDIS_VERSION="stable"
 
 RUN addgroup -S -g 1000 redis && adduser -S -G redis -u 999 redis && \
-    apk add --no-cache su-exec tzdata make curl build-base linux-headers
+    apk add --no-cache su-exec tzdata make curl build-base linux-headers bash
 
 RUN curl -fL -Lo /tmp/redis-${REDIS_VERSION}.tar.gz ${REDIS_DOWNLOAD_URL}/redis-${REDIS_VERSION}.tar.gz && \
     cd /tmp && \
diff --git a/entrypoint.sh b/entrypoint.sh
index 406b0fd980b979efb843aa899dc4ea136ee7a957..47668cc587a194529e622a5b2015facbc5efad2f 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 set -eu