Update README.md

Author: teamon

Diff for: README.md

@@ -1,5 +1,60 @@
 # mix docker
 
+## 🚨🚨 This project is now obsolete and abandoned! 🚨🚨
+
+With docker multi-stage builds you can simply use:
+```dockerfile
+# Dockerfile
+FROM elixir:1.6.5-alpine as build
+
+# install build dependencies
+RUN apk add --update git
+
+# prepare build dir
+RUN mkdir /app
+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 ./
+COPY config ./
+COPY deps ./
+RUN mix deps.compile
+
+# build release
+COPY . .
+RUN mix release --no-tar --verbose
+
+# prepare release image
+FROM alpine:3.6
+RUN apk add --update bash openssl
+
+RUN mkdir /app && chown -R nobody: /app
+WORKDIR /app
+USER nobody
+
+COPY --from=build /app/_build/prod/rel/myapp ./
+
+ENV REPLACE_OS_VARS=true
+ENV HTTP_PORT=4000 BEAM_PORT=14000 ERL_EPMD_PORT=24000
+EXPOSE $HTTP_PORT $BEAM_PORT $ERL_EPMD_PORT
+
+ENTRYPOINT ["/app/bin/myapp"]
+```
+
+and standard `docker build`.
+
+
+
+
+## OLD README CONTENT
+
 [![Build Status](https://travis-ci.org/Recruitee/mix_docker.svg?branch=master)](https://travis-ci.org/Recruitee/mix_docker)
 
 Put your Elixir app inside minimal Docker image.