Setting up docker for django, vue.js, rabbitmq - django

Question

I'm trying to add Docker support to my project.
My structure looks like this:
front/Dockerfile
back/Dockerfile
docker-compose.yml
My Dockerfile for django:
FROM ubuntu:18.04
RUN apt-get update && apt-get install -y python-software-properties software-properties-common
RUN add-apt-repository ppa:ubuntugis/ubuntugis-unstable
RUN apt-get update && apt-get install -y python3 python3-pip binutils libproj-dev gdal-bin python3-gdal
ENV APPDIR=/code
WORKDIR $APPDIR
ADD ./back/requirements.txt /tmp/requirements.txt
RUN ./back/pip3 install -r /tmp/requirements.txt
RUN ./back/rm -f /tmp/requirements.txt
CMD $APPDIR/run-django.sh
My Dockerfile for Vue.js:
FROM node:9.11.1-alpine
# install simple http server for serving static content
RUN npm install -g http-server
# make the 'app' folder the current working directory
WORKDIR /app
# copy both 'package.json' and 'package-lock.json' (if available)
COPY package*.json ./
# install project dependencies
RUN npm install
# copy project files and folders to the current working directory (i.e. 'app' folder)
COPY . .
# build app for production with minification
RUN npm run build
EXPOSE 8080
CMD [ "http-server", "dist" ]
and my docker-compose.yml:
version: '2'
services:
rabbitmq:
image: rabbitmq
api:
build:
context: ./back
environment:
- DJANGO_SECRET_KEY=${SECRET_KEY}
volumes:
- ./back:/app
rabbit1:
image: "rabbitmq:3-management"
hostname: "rabbit1"
ports:
- "15672:15672"
- "5672:5672"
labels:
NAME: "rabbitmq1"
volumes:
- "./enabled_plugins:/etc/rabbitmq/enabled_plugins"
django:
extends:
service: api
command:
./back/manage.py runserver
./back/uwsgi --http :8081 --gevent 100 --module websocket --gevent-monkey-patch --master --processes 4
ports:
- "8000:8000"
volumes:
- ./backend:/app
vue:
build:
context: ./front
environment:
- HOST=localhost
- PORT=8080
command:
bash -c "npm install && npm run dev"
volumes:
- ./front:/app
ports:
- "8080:8080"
depends_on:
- django
Running docker-compose fails with:
ERROR: for chatapp2_django_1 Cannot start service django: b'OCI runtime create failed: container_linux.go:348: starting container process caused "exec: \\"./back/manage.py\\": stat ./back/manage.py: no such file or directory": unknown'
ERROR: for rabbit1 Cannot start service rabbit1: b'driver failed programming external connectivity on endpoint chatapp2_rabbit1_1 (05ff4e8c0bc7f24216f2fc960284ab8471b47a48351731df3697c6d041bbbe2f): Error starting userland proxy: listen tcp 0.0.0.0:15672: bind: address already in use'
ERROR: for django Cannot start service django: b'OCI runtime create failed: container_linux.go:348: starting container process caused "exec: \\"./back/manage.py\\": stat ./back/manage.py: no such file or directory": unknown'
ERROR: Encountered errors while bringing up the project.
I don't understand what is this 'unknown' directory it's trying to get. Have I set this all up right for my project structure?

Answer 1

For the django part you're missing a copy of your code for the django app which im assuming is in back. You'll need to add ADD /back /code. You probably also wanna probably run the python alpine docker build instead of the ubuntu as it will significantly reduce build times and container size.
This is what I would do:
# change this to whatever python version your app is targeting (mine is typically 3.6)
FROM python:3.6-alpine
ADD /back /code
# whatever other dependencies you'll need i run with the psycopg2-binary build so i need these (the nice part of the python-alpine image is you don't need to install any of those python specific packages you were installing before
RUN apk add --virtual .build-deps gcc musl-dev postgresql-dev
RUN pip install -r /code/requirements.txt
# expose whatever port you need for your Django app (default is 8000, we use non-default but you can do whatever you need)
EXPOSE 8000
WORKDIR /code
#dont need /code here since WORKDIR is effectively a change directory
RUN chmod +x /run-django.sh
RUN apk add --no-cache bash postgresql-libs
CMD ["/run-django.sh"]
We have a similar run-django.sh script that we call python manage.py makemigrations and python manage.py migrate. I'm assuming yours is similar.
Long story short, you weren't copying in the code from back to code.
Also in your docker-compose you dont have build context like you do for the vue service.
As for your rabbitmq container failure, you need to stop the /etc service associated with rabbit on your computer. I get this error if i'm trying to expose a postgresql container or a redis container and have to /etc/init.d/postgresql stop or /etc/init.d/redis stop to stop the service running on your machine in order to allow for no collisions on that default port for that service.