ubuntu:17.10 erlang 20.2

Dockerfile

FROM ubuntu:17.10

RUN \
  sed -i 's/# \(.*multiverse$\)/\1/g' /etc/apt/sources.list && \
  apt-get update && \
  apt-get -y upgrade && \
  apt-get install -y --no-install-recommends wget build-essential git ca-certificates && \
  wget http://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb && \
  dpkg -i erlang-solutions_1.0_all.deb && \
  apt-get update && \
  apt-get install -y --no-install-recommends erlang-nox erlang-dev erlang-src && \
  wget https://s3.amazonaws.com/rebar3/rebar3 -O /usr/local/bin/rebar3 && \
  chmod 755 /usr/local/bin/rebar3

RUN useradd -ms /bin/bash devuser
USER devuser
WORKDIR /home/devuser

COPY validate_config /usr/local/bin/validate_config

validate_config

#!/usr/bin/env escript
%% -*- erlang -*-
%%! -smp enable -sname validate
main(Args) ->
    lists:map(
        fun(CfgFile) ->
            io:format("validating: ~s ..", [CfgFile]),
            {ok, _} = file:consult(CfgFile),
            io:format("..ok~n")
        end, Args).