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Reduce Docker image size from 165 MB to 32.8 MB #131

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merged 3 commits into from
Aug 27, 2018
Merged

Reduce Docker image size from 165 MB to 32.8 MB #131

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be4cdaf
Reduce Docker image size from 165 MB to 115 MB
cbliard Aug 23, 2018
61d56b9
More aggressive reduction of docker image size
cbliard Aug 23, 2018
9133535
Remove hardcoded version
cbliard Aug 27, 2018
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25 changes: 19 additions & 6 deletions Dockerfile
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Original file line number Diff line number Diff line change
@@ -1,19 +1,32 @@
FROM elixir:1.5.2-alpine
FROM elixir:1.5.2-alpine AS builder

ENV APP_NAME poxa
ENV MIX_ENV prod

RUN apk --update add bash git erlang-xmerl erlang-crypto erlang-sasl && rm -rf /var/cache/apk/*
RUN apk --no-cache add git erlang-xmerl erlang-crypto erlang-sasl

COPY . /source
WORKDIR /source

RUN mix local.hex --force && mix local.rebar --force
RUN mix deps.get
RUN mix compile
RUN mix do \
local.hex --force, \
local.rebar --force, \
deps.get, \
compile
RUN echo "" > config/poxa.prod.conf
RUN mix release
RUN mkdir -p /app/$APP_NAME
WORKDIR /app/$APP_NAME
RUN tar xzf /source/_build/prod/rel/$APP_NAME/releases/*/$APP_NAME.tar.gz

RUN mkdir /app && cp -r _build/prod/rel/$APP_NAME /app && rm -rf /source

FROM alpine:3.6

ENV APP_NAME poxa
ENV MIX_ENV prod

RUN apk --no-cache add bash openssl

COPY --from=builder /app /app

CMD /app/$APP_NAME/bin/$APP_NAME foreground
3 changes: 1 addition & 2 deletions rel/config.exs
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Expand Up @@ -18,7 +18,7 @@ environment :dev do
end

environment :prod do
set include_erts: false
set include_erts: true
set include_src: false
set cookie: :"xR=}b(ZcHU8M1Lu&642.m{u{O)H]WD>[&&_5t8FW3t5mxy4nw=de~;lEbw*?EFXC"
end
Expand All @@ -30,4 +30,3 @@ release :poxa do
]
plugin Conform.ReleasePlugin
end