Docker-compose setup

Dockerfile

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+FROM python:3.11-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    libpq-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --upgrade pip
+RUN pip install -r requirements.txt
+
+COPY . .
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]

docker-compose.yaml

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+version: '3.9'
+
+services:
+  django-app:
+    build: .
+    container_name: django_app
+    ports:
+      - "${PORT:-8000}:8000"
+    env_file:
+      - ./warehouse_managment/warehouse_managment/.env
+    volumes:
+      - .:/app
+    working_dir: /app/warehouse_managment
+    restart: unless-stopped

entrypoint.sh

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+#!/bin/sh
+
+echo "⚙️ Applying migrations..."
+python manage.py migrate
+
+echo "📦 PORT from .env is: $PORT"
+
+PORT=${PORT:-8000}
+echo "🚀 Starting Django server on port $PORT..."
+python manage.py runserver 0.0.0.0:$PORT

warehouse_managment/.env.example

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+PORT=8003

warehouse_managment/warehouse_managment/.env.example

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+# Django
+DJANGO_SECRET_KEY=your-secret-key-here
+DJANGO_DEBUG=True
+DJANGO_ALLOWED_HOSTS=localhost,127.0.0.1
+
+# POSTGRES_DB=warehouse_inventory
+# POSTGRES_USER=admin
+# POSTGRES_PASSWORD=admin
+# POSTGRES_PORT=5432
+# POSTGRES_HOST=localhost
+
+DATABASE_URL=your_db_url