workaround for npm/uid-number#3

Author: 36web

Dockerfile

@@ -3,8 +3,10 @@ FROM node:10-alpine
 LABEL AUTHOR Chris<[email protected]>
 
 RUN apk add --no-cache git \
+    && npm config set unsafe-perm true \
     && npm install -g hexo-cli \
     && npm cache clear --force \
+    && npm config set unsafe-perm false \
     && rm -rf /tmp/* \
     && mkdir /blog \
     && chown node:node /blog