shithub: hugo

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Dockerfile: Optimize Docker image size

Reduce Docker image size from 428 MB to 277 MB.

See #3674

--- a/Dockerfile

+++ b/Dockerfile

@@ -4,24 +4,22 @@

 RUN \

   adduser -h /site -s /sbin/nologin -u 1000 -D hugo && \

-  apk add --no-cache dumb-init && \

-  apk add --no-cache --virtual .build-deps \

-    git \

-    make && \

+  apk add --no-cache \

+    dumb-init \

+    git && \

   go get github.com/kardianos/govendor && \

   govendor get github.com/gohugoio/hugo && \

   cd $GOPATH/src/github.com/gohugoio/hugo && \

-  make install test && \

-  rm -rf $GOPATH/src/* && \

-  apk del .build-deps

+  go install && \

+  cd $GOPATH && \

+  rm -rf pkg src .cache bin/govendor && \

+  apk del --no-cache git go

-USER hugo

-

+USER    hugo

 WORKDIR /site

+VOLUME  /site

+EXPOSE  1313

-EXPOSE 1313

-

 ENTRYPOINT ["/usr/bin/dumb-init", "--", "hugo"]

-

 CMD [ "--help" ]