mix release on Amazon Linux 2 - amazon-ec2

Question

Goal: to be able to run a phoenix, mix release in an ec2 instance (this machine: https://hub.docker.com/_/amazonlinux/)
Problem: Running my release produces the following error:
/my_app/erts-11.0.3/bin/beam.smp: /lib64/libtinfo.so.6: no version information available (required by /my_app/erts-11.0.3/bin/beam.smp)
2020-09-08 13:17:33.469328
args: [load_failed,"Failed to load NIF library /my_app/lib/crypto-4.7/priv/lib/crypto: 'libcrypto.so.1.1: cannot open shared object file: No such file or directory'","OpenSSL might not format: label: be installed on this system.\n"]
"Unable to load crypto library. Failed with error:~n\"~p, ~s\"~n~s"
{error_logger,error_msg}
but I have openssl installed in each scenario (OpenSSL 1.0.2k-fips 26 Jan 2017).
Setup:
I create a new phoenix project with:
yes | mix phx.new my_app --no-webpack --no-ecto --no-dashboard --no-gettext
cd my_app
and uncomment the config :my_app, MyAppWeb.Endpoint, server: true line in config/prod.secret.exs to start the server when running the app.
I create the following Dockerfile to build my project:
FROM debian:buster
# Install essential build packages
RUN apt-get update
RUN apt-get install -y wget git locales curl gnupg-agent
# Set locale
RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
dpkg-reconfigure --frontend=noninteractive locales && \
update-locale LANG=en_US.UTF-8
ENV LANG en_US.UTF-8
ENV HOME=/opt/app
WORKDIR /opt/app
# Install erlang and elixir
RUN wget https://packages.erlang-solutions.com/erlang-solutions_2.0_all.deb
RUN dpkg -i erlang-solutions_2.0_all.deb
RUN apt-get update
RUN apt-get install -y esl-erlang
RUN apt-get install -y elixir
# Install hex and rebar
RUN mix do local.hex --force, local.rebar --force
# Install phoenix
RUN mix archive.install hex phx_new 1.5.4 --force
COPY mix.exs mix.lock ./
COPY config config
COPY priv priv
COPY lib lib
RUN mix deps.get
ENV SECRET_KEY_BASE='secretExampleQrzdplBPdbHHhr2bpELjiGVGVqmjvFl2JEXdkyla8l6+b2CCcvs'
ENV MIX_ENV=prod
RUN mix phx.digest
RUN mix compile
RUN mix release
CMD ["_build/prod/rel/my_app/bin/my_app", "start"]
and build the image with:
docker build . -t my_app
We can check that everything is running as expected with:
docker run -p 4000:4000 -i my_app:latest
and visiting localhost:4000.
I copy the _build/prod/rel/my_app directory from the built docker container (as this is all I'll be transferring across to my ec2 instance).
# list all containers
docker container ls -a
# locate the container with image tag: my_app:latest. It should look like:
# f9c46df97e55 my_app:latest "_build/prod/rel/my_…"
# note the container_id, and copy across the build release
docker cp f9c46df97e55:/opt/app/_build/prod/rel/my_app .
We create an instance.Dockerfile to run the commands of our ec2 instance:
FROM amazonlinux:latest
COPY my_app my_app
CMD ["my_app/bin/my_app", "start"]
and run it:
docker build . -f instance.Dockerfile -t my_app_instance && docker run -p 4000:4000 -i my_app_instance:latest
This fails to run, with the error:
[load_failed,"Failed to 2020-09-08 13:27:49.980715
args: load NIF library /my_app/lib/crypto-4.7/priv/lib/crypt format: label: 2020-09-08 13:27:49.981847 supervisor_report o: 'libcrypto.so.1.1: cannot open shared object file: No such file or directory'","OpenSSL might not be installed on this system.\n"]
"Unable to load crypto library. Failed with error:~n\"~p, ~s\"~n~s"
{error_logger,error_msg}
Note:
I am able to replicate the error on a debian:buster machine with the above docker build ... && docker run ... command, but with this instance.Dockerfile:
FROM debian:buster
RUN apt-get update
RUN apt-get install -y locales
# Set locale
RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
dpkg-reconfigure --frontend=noninteractive locales && \
update-locale LANG=en_US.UTF-8
ENV LANG en_US.UTF-8
COPY my_app my_app
CMD ["my_app/bin/my_app", "start"]
and fix the error by changing: RUN apt-get install -y locales to RUN apt-get install -y locales curl.
I have tried yum install curl and yum install openssl on the amazonlinux:latest machine, but still experience the same error.
Question:
Where should I look to make progress on this? It seems to be an erlang/otp requirement issue, but the above is hardly a sscce, so difficult to raise.
I have struggled with finding what crypto or openssl library the apt-get curl package installs which causes the error to be fixed.
Any pointers to a particular forum to ask for help, or what to try next would be greatly appreciated.
Thanks in advance for the help.

Answer 1

Thanks to the suggestion to build it on CentOs from #VenkatakumarSrinivasan,
I managed to get it working on an amazonlinux machine with the following Dockerfiles.
Building the release:
FROM centos:7
RUN yum update -y
RUN yum clean -y all
RUN echo 'LC_ALL="en_US.UTF-8"' >> /etc/locale.conf
ENV LC_ALL="en_US.UTF-8"
RUN yum install -y epel-release
RUN yum install -y gcc gcc-c++ glibc-devel make ncurses-devel openssl-devel \
autoconf java-1.8.0-openjdk-devel git wget wxBase.x86_64
WORKDIR /opt
RUN wget http://packages.erlang-solutions.com/erlang-solutions-1.0-1.noarch.rpm
RUN rpm -Uvh erlang-solutions-1.0-1.noarch.rpm
RUN yum update -y
RUN yum install -y erlang
WORKDIR /opt/elixir
RUN git clone https://github.com/elixir-lang/elixir.git /opt/elixir
RUN make clean test
ENV PATH=/opt/elixir/bin:${PATH}
RUN mix do local.hex --force, local.rebar --force
RUN mix archive.install hex phx_new 1.5.4 --force
WORKDIR /opt/app
COPY mix.exs mix.lock ./
COPY config config
COPY priv priv
COPY lib lib
RUN mix deps.get
ENV SECRET_KEY_BASE='secretExampleQrzdplBPdbHHhr2bpELjiGVGVqmjvFl2JEXdkyla8l6+b2CCcvs'
ENV MIX_ENV=prod
RUN mix phx.digest
RUN mix compile
RUN mix release
CMD ["_build/prod/rel/my_app/bin/my_app", "start"]
Running the release:
FROM amazonlinux:latest
RUN yum -y update
ENV LANG="en_US.UTF-8"
ENV LC_ALL="en_US.UTF-8"
RUN ln -s /usr/lib64/libtinfo.so.{6,5}
COPY my_app my_app
CMD ["my_app/bin/my_app", "start"]
I'm not sure if this is a satisfying solution though, I'm open to a more elegant solution.