diff --git a/Dockerfile b/Dockerfile
index 6afc9ff..891512b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM node:lts-alpine
 
-RUN apk add --no-cache git python2 build-base
+RUN apk add --no-cache git python2 build-base yarn
 COPY "entrypoint.sh" "/entrypoint.sh"
 ENTRYPOINT ["/entrypoint.sh"]
 CMD ["help"]