2017-07-11T12:13:03.823882+00:00 app[web.1]:     connection = Database.connect(**conn_params)
2017-07-11T12:13:03.823882+00:00 app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/psycopg2/__init__.py", line 130, in connect
2017-07-11T12:13:03.823883+00:00 app[web.1]:     conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
2017-07-11T12:13:03.823884+00:00 app[web.1]: django.db.utils.OperationalError: could not translate host name "db" to address: Name or service not known

web: sh -c 'cd PROJECT/backend/project && gunicorn project.wsgi --log-file -'

DockerProject
      ├── Dockerfile
      ├── Procfile
      ├── init.sql
      ├── requirements.txt
      ├── docker-compose.yml
      └── PROJECT
            ├── frontend
            └── backend
                  └── project
                        ├── prices
                        ├── manage.py
                        └── project
                              └── all project files

# Create image based on the official Node 6 image from dockerhub
FROM node:6

# Create a directory where our app will be placed
RUN mkdir -p /usr/src/app

# Change directory so that our commands run inside this new directory
WORKDIR /usr/src/app

# Copy dependency definitions
COPY package.json /usr/src/app

# Install dependecies
RUN npm install

# Get all the code needed to run the app
COPY . /usr/src/app

# Expose the port the app runs in
EXPOSE 4200

# Serve the app
CMD ["npm", "start"]

FROM python:3.6.1
ENV PYTHONUNBUFFERED 1
RUN mkdir /code
WORKDIR /code
ADD requirements.txt /code/
RUN pip3 install -r requirements.txt
ADD . /code/

version: '3'

services:
  db:
    image: postgres
    environment:
      POSTGRES_USER: aso
      POSTGRES_PASSWORD: somepass
  django:
    build: .
    command: python3 MainDirectory/backend/myProject/manage.py runserver 0.0.0.0:8001
    volumes:
      - .:/code
    ports:
      - "8001:8001"
    depends_on:
      - db
  angular:
    build: MainDirectory/frontend
    ports:
      - "4200:4200"
    depends_on:
      - django

CREATE USER myUser;
CREATE DATABASE myProject;
GRANT ALL PRIVILEGES ON DATABASE myProject TO myUser;