diff --git a/zsh/Dockerfile b/zsh/Dockerfile
index 02059e5..2b35f06 100644
--- a/zsh/Dockerfile
+++ b/zsh/Dockerfile
@@ -1,13 +1,13 @@
-FROM debian:stretch
+FROM alpine:latest
 
 COPY ./.zshrc /root/.zshrc
 
-RUN apt-get update -y \
-	&& apt-get install -y zsh \
-	&& rm -rf /var/lib/apt/lists/* \
-	&& chsh -s /usr/bin/zsh
+RUN apk --no-cache add \
+	shadow \
+	zsh \
+	&& chsh -s /bin/zsh
 
 ENV SHELL /usr/bin/zsh
 
 WORKDIR /root
-ENTRYPOINT /usr/bin/zsh
+ENTRYPOINT /bin/zsh