feat(backend): Add all-in-one Docker container for production deployment

.dockerignore

@@ -0,0 +1,3 @@
+__pycache__
+.env
+app/node_modules

Dockerfile

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+FROM node:14-alpine AS app
+
+COPY app /app
+WORKDIR /app
+RUN yarn
+ENV API_ROOT=/api
+RUN yarn build
+
+FROM python:3.9-slim
+
+RUN pip install pipenv gunicorn
+WORKDIR /usr/src/app
+COPY backend .
+RUN mkdir /data
+RUN pipenv install --deploy --system
+
+RUN apt update && apt install -y \
+  nginx-light \
+  supervisor \
+  && rm -rf /var/lib/apt/lists/*
+
+COPY --from=app /app/dist /var/www/html
+COPY docker /
+
+WORKDIR /usr/src/app/dpt_app
+RUN python manage.py collectstatic --no-input
+
+EXPOSE 80
+
+CMD ["/usr/bin/supervisord", "--nodaemon", "-c", "/etc/supervisor/supervisord.conf"]

README.md

@@ -25,3 +25,31 @@ mdbook serve
 ## App Frontend
 
 See [app/README.md](app/README.md).
+
+## App Backend
+
+See [backend/README.md](backend/README.md).
+
+## Production Setup
+
+The production setup is done using a single Docker container.
+
+To build the Docker container, execute:
+
+```
+$ docker build -t abc-dpt .
+```
+
+To run the Docker container, execute:
+
+```
+$ docker run --rm -p 8000:80 -v data:/data abc-dpt
+```
+
+You can now access the app at [localhost:8000](http://localhost:8000).
+
+To persist the database and media files, make sure to provide a volume for `/data`.
+
+The web server is exposed at port 80.
+
+The behavior of the container can be changed by overriding environment variables. Check out the example `.env` file for a list of variables: [.env.example](backend/dpt_app/.env.example).

docker/etc/nginx/sites-enabled/default

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+server {
+  listen 80 default_server;
+  listen [::]:80 default_server;
+
+  root /var/www/html;
+
+  location / {
+    try_files $uri $uri/ /index.html;
+  }
+
+  location ~ ^/(api|admin) {
+    proxy_pass http://127.0.0.1:8000;
+    proxy_set_header Host $host;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+  }
+
+  location /static {
+    alias /usr/src/app/dpt_app/staticfiles;
+  }
+
+  location /media {
+    alias /data/media;
+  }
+}

docker/etc/supervisor/conf.d/dpt.conf

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+[program:dpt-backend]
+command = /usr/src/app/dpt_app/run.sh
+directory = /usr/src/app/dpt_app
+
+[program:nginx]
+command = /usr/sbin/nginx -g 'daemon off;'

docker/usr/src/app/dpt_app/run.sh

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+#!/bin/sh
+
+./manage.py migrate
+gunicorn -b [::]:8000 dpt_app.wsgi:application