diff --git a/Dockerfile b/Dockerfile
index 12d5ee9..3f067a2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,5 @@
 FROM nginx:alpine
+RUN apk add --no-cache zip
 COPY site/ /usr/share/nginx/html/
 RUN cd /usr/share/nginx/html/mp3s && zip -0 ../interpretations-full-album.zip *.mp3
 EXPOSE 80