diff --git a/Dockerfile b/Dockerfile
index 1ebf0e3d3d4ef56a4399e82d09f8f9307290442c..e12d5876d722e4557062f90df5e795ff1f97482d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,8 @@ FROM node:10-alpine
 
 ENV NODE_PATH /usr/local/share/.config/yarn/global/node_modules
 
-RUN yarn global add --ignore-optional --silent @antora/cli@latest @antora/site-generator-default@latest \
+RUN apk --no-cache add curl findutils jq \
+    && yarn global add --ignore-optional --silent @antora/cli@latest @antora/site-generator-default@latest \
     && rm -rf $(yarn cache dir)/* \
     && find $(yarn global dir)/node_modules/asciidoctor.js/dist/* -maxdepth 0 -not -name node -exec rm -rf {} \; \
     && find $(yarn global dir)/node_modules/handlebars/dist/* -maxdepth 0 -not -name cjs -exec rm -rf {} \; \
@@ -10,7 +11,7 @@ RUN yarn global add --ignore-optional --silent @antora/cli@latest @antora/site-g
     && find $(yarn global dir)/node_modules/isomorphic-git/dist/* -maxdepth 0 -not -name for-node -exec rm -rf {} \; \
     && rm -rf $(yarn global dir)/node_modules/moment/min \
     && rm -rf $(yarn global dir)/node_modules/moment/src \
-    && apk --no-cache add curl jq \
+    && rm -rf $(yarn global dir)/node_modules/source-map/dist \
     && rm -rf /tmp/*
 
 WORKDIR /antora