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My Dockerfile vs the generated one

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# Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian instead of

# Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian

# Alpine to avoid DNS resolution issues in production.

# instead of Alpine to avoid DNS resolution issues in production.

# https://hub.docker.com/r/hexpm/elixir/tags?page=1&name=ubuntu

# https://hub.docker.com/_/ubuntu?tab=tags

# This file is based on these images:

# - https://hub.docker.com/r/hexpm/elixir/tags - for the build image

# - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20210902-slim - for the release image

# - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20230227-slim - for the release image

# - https://pkgs.org/ - resource for finding needed packages

# - Ex: hexpm/elixir:1.14.0-erlang-24.3.4-debian-bullseye-20210902-slim

# - Ex: hexpm/elixir:1.14.4-erlang-25.3.2-debian-bullseye-20230227-slim

ARG ELIXIR_VERSION=1.14.0

ARG ELIXIR_VERSION=1.14.4

ARG OTP_VERSION=24.3.4

ARG OTP_VERSION=26.0

ARG DEBIAN_VERSION=bullseye-20210902-slim

ARG DEBIAN_VERSION=bullseye-20230227-slim

ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"

ARG BUILDER_IMAGE="docker.io/hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"

ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}"

ARG RUNNER_IMAGE="docker.io/debian:${DEBIAN_VERSION}"

FROM ${BUILDER_IMAGE} as builder

# install build dependencies

# install build dependencies (CUSTOM: nodejs + npm)

RUN apt-get update -y && apt-get install -y build-essential git \

RUN apt-get update -y && apt-get install -y build-essential git nodejs npm \

&& apt-get clean && rm -f /var/lib/apt/lists/*_*

# prepare build dir

WORKDIR /app

# install hex + rebar

RUN mix local.hex --force && \

mix local.rebar --force

# set build ENV

ENV MIX_ENV="prod"

# install mix dependencies

COPY mix.exs mix.lock ./

RUN mix deps.get --only $MIX_ENV

RUN mkdir config

# copy compile-time config files before we compile dependencies

# to ensure any relevant config change will trigger the dependencies

# to be re-compiled.

COPY config/config.exs config/${MIX_ENV}.exs config/

RUN mix deps.compile

# CUSTOM: copy `lib` first so tailwind purge will work

COPY lib lib

COPY priv priv

# note: if your project uses a tool like https://purgecss.com/,

# which customizes asset compilation based on what it finds in

# your Elixir templates, you will need to move the asset compilation

# step down so that `lib` is available.

COPY assets assets

# CUSTOM: install npm dependencies

RUN cd assets && npm install

# compile assets

RUN mix assets.deploy

# Compile the release

COPY lib lib

RUN mix compile

# Changes to config/runtime.exs don't require recompiling the code

COPY config/runtime.exs config/

COPY rel rel

RUN mix release

# start a new build stage so that the final image will only contain

# the compiled release and other runtime necessities

FROM ${RUNNER_IMAGE}

RUN apt-get update -y && apt-get install -y libstdc++6 openssl libncurses5 locales \

&& apt-get clean && rm -f /var/lib/apt/lists/*_*

# Set the locale

RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen

ENV LANG en_US.UTF-8

ENV LANGUAGE en_US:en

ENV LC_ALL en_US.UTF-8

WORKDIR "/app"

RUN chown nobody /app

# set runner ENV

ENV MIX_ENV="prod"

# Only copy the final release from the build stage

COPY --from=builder --chown=nobody:root /app/_build/${MIX_ENV}/rel/my_app ./

USER nobody

CMD /app/bin/server

CMD ["sh", "-c", "/app/bin/my_app eval TodoList.Release.migrate && /app/bin/server"]

Diffs guardadas

Texto original

Abrir archivo

# Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian instead of
# Alpine to avoid DNS resolution issues in production.
#
# https://hub.docker.com/r/hexpm/elixir/tags?page=1&name=ubuntu
# https://hub.docker.com/_/ubuntu?tab=tags
#
#
# This file is based on these images:
#
#   - https://hub.docker.com/r/hexpm/elixir/tags - for the build image
#   - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20210902-slim - for the release image
#   - https://pkgs.org/ - resource for finding needed packages
#   - Ex: hexpm/elixir:1.14.0-erlang-24.3.4-debian-bullseye-20210902-slim
#
ARG ELIXIR_VERSION=1.14.0
ARG OTP_VERSION=24.3.4
ARG DEBIAN_VERSION=bullseye-20210902-slim

ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}"

FROM ${BUILDER_IMAGE} as builder

# install build dependencies
RUN apt-get update -y && apt-get install -y build-essential git \
    && apt-get clean && rm -f /var/lib/apt/lists/*_*

# prepare build dir
WORKDIR /app

# install hex + rebar
RUN mix local.hex --force && \
    mix local.rebar --force

# set build ENV
ENV MIX_ENV="prod"

# install mix dependencies
COPY mix.exs mix.lock ./
RUN mix deps.get --only $MIX_ENV
RUN mkdir config

# copy compile-time config files before we compile dependencies
# to ensure any relevant config change will trigger the dependencies
# to be re-compiled.
COPY config/config.exs config/${MIX_ENV}.exs config/
RUN mix deps.compile

COPY priv priv

# note: if your project uses a tool like https://purgecss.com/,
# which customizes asset compilation based on what it finds in
# your Elixir templates, you will need to move the asset compilation
# step down so that `lib` is available.
COPY assets assets

# compile assets
RUN mix assets.deploy

# Compile the release
COPY lib lib

RUN mix compile

# Changes to config/runtime.exs don't require recompiling the code
COPY config/runtime.exs config/

COPY rel rel
RUN mix release

# start a new build stage so that the final image will only contain
# the compiled release and other runtime necessities
FROM ${RUNNER_IMAGE}

RUN apt-get update -y && apt-get install -y libstdc++6 openssl libncurses5 locales \
  && apt-get clean && rm -f /var/lib/apt/lists/*_*

# Set the locale
RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen

ENV LANG en_US.UTF-8
ENV LANGUAGE en_US:en
ENV LC_ALL en_US.UTF-8

WORKDIR "/app"
RUN chown nobody /app

# set runner ENV
ENV MIX_ENV="prod"

# Only copy the final release from the build stage
COPY --from=builder --chown=nobody:root /app/_build/${MIX_ENV}/rel/my_app ./

USER nobody

CMD /app/bin/server

Texto modificado

Abrir archivo

# Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian
# instead of Alpine to avoid DNS resolution issues in production.
#
# https://hub.docker.com/r/hexpm/elixir/tags?page=1&name=ubuntu
# https://hub.docker.com/_/ubuntu?tab=tags
#
# This file is based on these images:
#
#   - https://hub.docker.com/r/hexpm/elixir/tags - for the build image
#   - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20230227-slim - for the release image
#   - https://pkgs.org/ - resource for finding needed packages
#   - Ex: hexpm/elixir:1.14.4-erlang-25.3.2-debian-bullseye-20230227-slim
#
ARG ELIXIR_VERSION=1.14.4
ARG OTP_VERSION=26.0
ARG DEBIAN_VERSION=bullseye-20230227-slim

ARG BUILDER_IMAGE="docker.io/hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
ARG RUNNER_IMAGE="docker.io/debian:${DEBIAN_VERSION}"

FROM ${BUILDER_IMAGE} as builder

# install build dependencies (CUSTOM: nodejs + npm)
RUN apt-get update -y && apt-get install -y build-essential git nodejs npm \
    && apt-get clean && rm -f /var/lib/apt/lists/*_*

# prepare build dir
WORKDIR /app

# install hex + rebar
RUN mix local.hex --force && \
    mix local.rebar --force

# set build ENV
ENV MIX_ENV="prod"

# install mix dependencies
COPY mix.exs mix.lock ./
RUN mix deps.get --only $MIX_ENV
RUN mkdir config

# CUSTOM: copy `lib` first so tailwind purge will work
COPY lib lib
COPY priv priv
COPY assets assets

# CUSTOM: install npm dependencies
RUN cd assets && npm install

# compile assets
RUN mix assets.deploy

# Compile the release
RUN mix compile

# Changes to config/runtime.exs don't require recompiling the code
COPY config/runtime.exs config/

COPY rel rel
RUN mix release

# start a new build stage so that the final image will only contain
# the compiled release and other runtime necessities
FROM ${RUNNER_IMAGE}

RUN apt-get update -y && apt-get install -y libstdc++6 openssl libncurses5 locales \
  && apt-get clean && rm -f /var/lib/apt/lists/*_*

# Set the locale
RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen

ENV LANG en_US.UTF-8
ENV LANGUAGE en_US:en
ENV LC_ALL en_US.UTF-8

WORKDIR "/app"
RUN chown nobody /app

# set runner ENV
ENV MIX_ENV="prod"

# Only copy the final release from the build stage
COPY --from=builder --chown=nobody:root /app/_build/${MIX_ENV}/rel/my_app ./

USER nobody

CMD ["sh", "-c", "/app/bin/my_app eval TodoList.Release.migrate && /app/bin/server"]