Hello fellas I am trying to deploy my phoenix app using distillery releases and docker I have been following tthis tutorial to get started.

What I have been up so far is this
prod.exs:

 config :greek_coin, GreekCoinWeb.Endpoint,
   http: [port: 80],       
   url: [host: "localhost"],       
   force_ssl: [rewrite_on: [:x_forwarded_proto]],
   https: [
     :inet6,               
     port: 443,
     cipher_suite: :strong,
     otp_app: :greek_coin, 
     keyfile: "/path/to/key.txt",
     certfile: "/path/to/cert.cert"
   ]

Docker file only slightly modified from the one in the turorial

# 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 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 distillery.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=greek_coin

RUN apk update && \
    apk add --no-cache \
      bash \
      openssl-dev \
      openssl\
      erlang-crypto


ENV REPLACE_OS_VARS=true \
    APP_NAME=${APP_NAME}

WORKDIR /opt/app

COPY --from=builder /opt/built .
RUN echo $DATABASE_HOST
RUN echo $DATABASE_USER
RUN echo $DATABASE_PASS
RUN echo $DATABASE_NAME
EXPOSE 80

CMD trap 'exit' INT; /opt/app/bin/${APP_NAME} foreground

make file

.PHONY: help
                               
APP_NAME ?= `grep 'app:' mix.exs | sed -e 's/\[//g' -e 's/ //g' -e 's/app://' -e 's/[:,]//g'`
APP_VSN ?= `grep 'version:' mix.exs | cut -d '"' -f2`
BUILD ?= `git rev-parse --short HEAD`

help:
    @echo "$(APP_NAME):$(APP_VSN)-$(BUILD)"
    @perl -nle'print $& if m{^[a-zA-Z_-]+:.*?## .*$$}' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

build: ## Build the Docker image
    docker build --build-arg APP_NAME=$(APP_NAME) \
        --build-arg APP_VSN=$(APP_VSN) \
        -t $(APP_NAME):$(APP_VSN)-$(BUILD) \
        -t $(APP_NAME):latest .

run: ## Run the app in Docker  
    docker run --env-file config/docker.env \
        --expose 80 -p 80:80 \ 
        --expose 443 -p 443:443 \
        --network host \       
        --rm -it $(APP_NAME):latest

docker-compose.yml

version: '3.5'

services:
  web:
    image: "greek_coin:latest"
    network_mode: host
    env_file:
      - docker.env

docker.env

HOSTNAME="localhost"
PORT=80
LANG=en_US.UTF-8  
REPLACE_OS_VARS=true           
ERLANG_COOKIE=greek_coin

Then I procced with the make build which outputs

Successfully built c244749bcf14
Successfully tagged greek_coin:0.1.1-114f7e3
Successfully tagged greek_coin:latest

And then I am running with docker-compose up
which only shows the following warning

Recreating greek_coin_web_1 ... done
Attaching to greek_coin_web_1
web_1  | warning: :simple_one_for_one strategy is deprecated, please use DynamicSupervisor instead
web_1  |   (elixir 1.10.4) lib/supervisor.ex:604: Supervisor.init/2
web_1  |   (stdlib 3.13) supervisor.erl:301: :supervisor.init/1
web_1  |   (stdlib 3.13) gen_server.erl:417: :gen_server.init_it/2
web_1  |   (stdlib 3.13) gen_server.erl:385: :gen_server.init_it/6
web_1  |   (stdlib 3.13) proc_lib.erl:226: :proc_lib.init_p_do_apply/3

Thing is that in my docker-compose.yml I am using the network_mode: host
using this parameter I got rid of the complains about database connection I had earlier but further more my expectation is that I should be able to access my app just by visiting localhost in my host machine. But this is not the case the container is runnig without any further output but I cannot access it through localhost. What do I miss ?

Any help or references that might help me understand my problem are greatly appriciated
Thanks in advance.