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FROM alpine:3.13
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LABEL org.opencontainers.image.authors="hanjo@bunix.de"
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ENV DEV_PACKAGES="build-base libffi-dev ruby-dev ruby-rdoc ruby-irb gcc make musl-dev"
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RUN apk add --no-cache ca-certificates ruby ruby-json libffi libstdc++ ${DEV_PACKAGES}
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ARG JEKYLL_VERSION
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RUN gem install jekyll -v ${JEKYLL_VERSION} \
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&& gem install jekyll-paginate \
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&& gem install jekyll-auto-image \
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&& gem install jekyll-tidy \
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&& gem install jekyll-sitemap \
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&& gem install bigdecimal \
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&& gem install kramdown-parser-gfm
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RUN apk del ${DEV_PACKAGES} \
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&& rm -rf /var/cache/apk/*
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