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Dockerfile: Reduce image size from 277MB to 27MB

"xtrem" awesome container size optimization
by using alpine:3.6 as base image
and by installing Go at build time.

See #3730 and #3738
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ellerbrock authored and anthonyfok committed Jul 26, 2017
1 parent 606d6a8 commit bfe0bfbbd1a59ddadb72a6b07fecce71716088ec
Showing with 12 additions and 4 deletions.
  1. +12 −4 Dockerfile
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@@ -1,19 +1,28 @@
FROM golang:alpine3.6
FROM alpine:3.6
ENV GOPATH /go
ENV PATH $GOPATH/bin:$PATH
RUN \
adduser -h /site -s /sbin/nologin -u 1000 -D hugo && \
apk add --no-cache \
dumb-init \
dumb-init && \
apk add --no-cache --virtual .build-deps \
gcc \
musl-dev \
go \
git && \
mkdir -p \
${GOPATH}/bin \
${GOPATH}/pkg \
${GOPATH}/src && \
go get github.com/kardianos/govendor && \
govendor get github.com/gohugoio/hugo && \
cd $GOPATH/src/github.com/gohugoio/hugo && \
go install && \
cd $GOPATH && \
rm -rf pkg src .cache bin/govendor && \
apk del --no-cache git go
apk del .build-deps
USER hugo
WORKDIR /site
@@ -22,4 +31,3 @@ EXPOSE 1313
ENTRYPOINT ["/usr/bin/dumb-init", "--", "hugo"]
CMD [ "--help" ]

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