feat: Docker Compose deployment with Nginx and Gunicorn

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile

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+FROM python:3.12-slim
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libpq-dev gcc \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+EXPOSE 8000

docker-compose.yml

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+services:
+  web:
+    build: .
+    env_file: .env
+    volumes:
+      - db:/app/db.sqlite3
+      - media:/app/media
+      - static:/app/staticfiles
+    expose:
+      - "8000"
+    command: >
+      sh -c "python manage.py migrate --noinput &&
+             python manage.py collectstatic --noinput &&
+             gunicorn plantdb.wsgi:application --bind 0.0.0.0:8000 --workers 2"
+    restart: unless-stopped
+
+  nginx:
+    image: nginx:alpine
+    ports:
+      - "80:80"
+    volumes:
+      - ./nginx/default.conf:/etc/nginx/conf.d/default.conf:ro
+      - media:/app/media:ro
+      - static:/app/staticfiles:ro
+    depends_on:
+      - web
+    restart: unless-stopped
+
+volumes:
+  db:
+  media:
+  static:

nginx/default.conf

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+upstream django {
+    server web:8000;
+}
+
+server {
+    listen 80;
+    client_max_body_size 20M;
+
+    location /static/ {
+        alias /app/staticfiles/;
+    }
+
+    location /media/ {
+        alias /app/media/;
+    }
+
+    location / {
+        proxy_pass http://django;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+}