Added Deployment Readme.

Deployment.md

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+# Deployment
+This is a little reminder what you will need to deploy the app.
+
+## Secret Key
+Generate Secret Key:
+```bash
+openssl rand -base64 36
+```
+
+## Environment
+```
+# .env
+# URL
+APP_URL='fbf.nabu-jena.de'
+
+# Switch off debugging in production
+DEBUG=False
+
+# Security from checks
+SECRET_KEY='LaLaLa'
+SECURE_SSL_REDIRECT=True
+SESSION_COOKIE_SECURE=True
+CSRF_COOKIE_SECURE=True
+CSRF_TRUSTED_ORIGINS='https://fbf.nabu-jena.de'
+
+# Email
+EMAIL_BACKEND='django.core.mail.backends.smtp.EmailBackend'
+EMAIL_HOST='smtp.strato.de'
+EMAIL_PORT=587
+EMAIL_USE_TLS=True
+EMAIL_HOST_USER='postmaster@nabu-jena.de'
+EMAIL_HOST_PASSWORD='LaLaLa'
+DEFAULT_FROM_EMAIL="fbf-admin@nabu-jena.de"% 
+```
+
+## Settings in Django Core
+```
+import os
+...
+DEBUG = False
+ALLOWED_HOSTS = ['*']
+...
+STATICFILES_DIRS = [BASE_DIR / "static", ]
+STATIC_ROOT = '/static/'
+STATIC_URL = '/static/'
+...
+# Email backend
+EMAIL_BACKEND = os.getenv('EMAIL_BACKEND')
+EMAIL_HOST=os.getenv('EMAIL_HOST')
+EMAIL_PORT=os.getenv('EMAIL_PORT')
+EMAIL_USE_TLS=os.getenv('EMAIL_USE_TLS')
+EMAIL_HOST_USER=os.getenv('EMAIL_HOST_USER')
+EMAIL_HOST_PASSWORD=os.getenv('EMAIL_HOST_PASSWORD')
+DEFAULT_FROM_EMAIL=os.getenv('DEFAULT_FROM_EMAIL')
+
+# CSRF
+CSRF_TRUSTED_ORIGINS=[os.getenv('CSRF_TRUSTED_ORIGINS')]
+```
+
+## Docker Stack
+```docker
+# docker-compose.yaml
+version: '3.7'
+
+services:
+  django_gunicorn:
+    build:
+      context: .
+    env_file:
+      - .env
+    volumes:
+      - static:/static
+      - ./django_project:/app
+    restart: always
+    container_name: lvr_django
+
+  nginx:
+    build: ./nginx
+    volumes:
+      - static:/static
+    depends_on:
+      - django_gunicorn
+    restart: always
+    container_name: lvr_nginx
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.whoami-http.entrypoints=web"
+      - "traefik.http.routers.whoami-http.rule=Host(`${APP_URL}`)"
+      - "traefik.http.routers.whoami.rule=Host(`${APP_URL}`)"
+      - "traefik.http.routers.whoami.tls.certresolver=default"
+      - "traefik.http.routers.whoami.tls=true"
+    networks:
+      - traefik_proxy
+      - default
+
+networks:
+  traefik_proxy:
+    external:
+      name: traefik_proxy
+
+volumes:
+  static:
+```
+
+## Dockerfile
+```
+# Dockerfile
+FROM python:3.10-alpine
+
+RUN apk add --update --no-cache postgresql-client jpeg-dev
+RUN apk add --update --no-cache --virtual .tmp-build-deps \
+      gcc libffi-dev libc-dev linux-headers postgresql-dev \
+      musl-dev zlib zlib-dev
+
+RUN pip install --upgrade pip
+
+COPY ./requirements.txt .
+RUN pip install -r requirements.txt
+
+# This is not installed by default
+RUN pip install tzdata
+
+COPY ./django_project /app
+
+WORKDIR /app
+
+COPY ./entrypoint.sh /
+ENTRYPOINT ["sh", "/entrypoint.sh"]
+```
+
+## Entrypoint Shell Script
+```
+# entrypoint.sh
+#!/bin/sh
+
+python manage.py migrate --no-input
+python manage.py collectstatic --no-input
+
+gunicorn core.wsgi:application --bind 0.0.0.0:8000
+```