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42 рядки
1.5 KiB
42 рядки
1.5 KiB
# https://docs.docker.com/engine/reference/builder/#from
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# "The FROM instruction initializes a new build stage and sets the
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# Base Image for subsequent instructions."
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FROM erlang:20.3.8.1-alpine as builder
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# https://docs.docker.com/engine/reference/builder/#label
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# "The LABEL instruction adds metadata to an image."
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LABEL stage=builder
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# Install git for fetching non-hex depenencies. Also allows rebar3
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# to find it's own git version.
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# Add any other Alpine libraries needed to compile the project here.
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# See https://wiki.alpinelinux.org/wiki/Local_APK_cache for details
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# on the local cache and need for the symlink
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RUN ln -s /var/cache/apk /etc/apk/cache && \
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apk update && \
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apk add --update openssh-client git
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# WORKDIR is located in the image
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# https://docs.docker.com/engine/reference/builder/#workdir
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WORKDIR /root/rebar3
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# copy the entire src over and build
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COPY . .
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RUN ./bootstrap
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# this is the final runner layer, notice how it diverges from the original erlang
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# alpine layer, this means this layer won't have any of the other stuff that was
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# generated previously (deps, build, etc)
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FROM erlang:20.3.8.1-alpine as runner
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# copy the generated `rebar3` binary over here
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COPY --from=builder /root/rebar3/_build/prod/bin/rebar3 .
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# and install it
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RUN HOME=/opt ./rebar3 local install \
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&& ln /opt/.cache/rebar3/bin/rebar3 /usr/local/bin/rebar3 \
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&& rm -rf rebar3
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# simply print out the version for visibility
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ENTRYPOINT ["/usr/local/bin/rebar3"]
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CMD ["--version"]
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