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@sgyyz
Created March 18, 2019 03:19
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# The version of Alpine to use for the final image
# This should match the version of Alpine that the `elixir:1.7.2-alpine` image uses
ARG ALPINE_VERSION=3.8
FROM elixir:1.7.2-alpine AS builder
# The following are build arguments used to change variable parts of the image.
# The name of your application/release (required)
ARG APP_NAME
# The version of the application we are building (required)
ARG APP_VSN
# The environment to build with
ARG MIX_ENV=prod
# Set this to true if this release is not a Phoenix app
ARG SKIP_PHOENIX=false
# If you are using an umbrella project, you can change this
# argument to the directory the Phoenix app is in so that the assets
# can be built
ARG PHOENIX_SUBDIR=.
ENV SKIP_PHOENIX=${SKIP_PHOENIX} \
APP_NAME=${APP_NAME} \
APP_VSN=${APP_VSN} \
MIX_ENV=${MIX_ENV}
# By convention, /opt is typically used for applications
WORKDIR /opt/app
# This step installs all the build tools we'll need
RUN apk update && \
apk upgrade --no-cache && \
apk add --no-cache \
nodejs \
yarn \
git \
build-base && \
mix local.rebar --force && \
mix local.hex --force
# This copies our app source code into the build container
COPY . .
RUN rm -rf deps/
RUN mix do deps.get, deps.compile, compile
# This step builds assets for the Phoenix app (if there is one)
# If you aren't building a Phoenix app, pass `--build-arg SKIP_PHOENIX=true`
# This is mostly here for demonstration purposes
RUN if [ ! "$SKIP_PHOENIX" = "true" ]; then \
cd ${PHOENIX_SUBDIR}/assets && \
yarn install && \
yarn deploy && \
cd .. && \
mix phx.digest; \
fi
RUN \
mkdir -p /opt/built && \
mix release --verbose && \
cp _build/${MIX_ENV}/rel/${APP_NAME}/releases/${APP_VSN}/${APP_NAME}.tar.gz /opt/built && \
cd /opt/built && \
tar -xzf ${APP_NAME}.tar.gz && \
rm ${APP_NAME}.tar.gz
# From this line onwards, we're in a new image, which will be the image used in production
FROM alpine:${ALPINE_VERSION}
# The name of your application/release (required)
ARG APP_NAME
RUN apk update && \
apk add --no-cache \
bash \
openssl-dev
ENV REPLACE_OS_VARS=true \
APP_NAME=${APP_NAME}
WORKDIR /opt/app
COPY --from=builder /opt/built .
CMD trap 'exit' INT; /opt/app/bin/${APP_NAME} foreground
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