Dockerfile.py

# Use ARG to define the default application directory, allowing override if needed
ARG APP_DIR=/app1

FROM python:3.9.18-bullseye

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1

# Use the ARG in WORKDIR, setting the working directory
WORKDIR $APP_DIR

# Install system dependencies
RUN apt-get update && apt-get install -y \
    nano \
    gcc \
    libpq-dev \
    libc6-dev \
    --no-install-recommends \
 && apt-get clean \
 && rm -rf /var/lib/apt/lists/*

# Create a non-root user (do not create /logs here to avoid permissions issue with Docker on macOS/Windows)
RUN groupadd -r alif && useradd -r -g alif alif --create-home

# Switch to that user before copying files and installing Python dependencies
USER alif

# Copy and install Python dependencies
COPY --chown=alif:alif requirements.txt ./
RUN pip install --upgrade pip && pip install --user -r requirements.txt
RUN pip install gunicorn gevent


# Adjust PATH to include the user's local bin for Python packages installed with --user
ENV PATH="/home/alif/.local/bin:${PATH}"

# Copy the application files
COPY --chown=alif:alif . .

# Copy the entrypoint script and adjust permissions
COPY --chown=alif:alif entrypoint-pro.sh /entrypoint-pro.sh
RUN chmod +x /entrypoint-pro.sh

RUN python manage.py collectstatic --noinput

# Use ENTRYPOINT to specify the entrypoint script
ENTRYPOINT ["/entrypoint-pro.sh"]

CMD ["gunicorn", "VisaGlobalWeb.wsgi:application", "--bind", "0.0.0.0:8000", "--workers", "3", "--worker-class", "gevent"]

# Compose file 
version: '3.8'

services:
  web:
    build:
      context: .
      dockerfile: ./app1/Dockerfile_pro
      args:
        APP_DIR: /app1
    command: gunicorn VisaGlobalWeb.wsgi:application --bind 0.0.0.0:8000 --workers 3 --worker-class gevent
    environment:
      - DB_HOST=pg_db
      - DB_NAME=faster_visa
      - DB_USER=saroar
      - DB_PASSWORD=password_vfs_@#
      - DB_PORT=5432
      - DJANGO_PORT=8000
    volumes:
      - .:/app1
      - static_volume:/app1/static
      - static_volume:/app1/staticfiles
      - media_volume:/app1/media
      - logs_volume:/app1/logs
    ports:
      - "8000:8000"
    depends_on:
      - pg_db
    container_name: fastervisa_web

  web2:
    build:
      context: .
      dockerfile: ./app2/Dockerfile_pro
      args:
        APP_DIR: /app2
    command: gunicorn VisaGlobalWeb.wsgi:application --bind 0.0.0.0:8001 --workers 3 --worker-class gevent
    environment:
      - DB_HOST=pg_db
      - DB_NAME=faster_visa
      - DB_USER=saroar
      - DB_PASSWORD=password_vfs_@#
      - DB_PORT=5432
      - DJANGO_PORT=8001
    volumes:
      - .:/app2
      - static_volume_2:/app2/static
      - media_volume_2:/app2/media
      - logs_volume_2:/app2/logs

    ports:
      - "8001:8000"
    depends_on:
      - pg_db
    container_name: fastervisa_web2

  pg_db:
    image: postgres:16
    environment:
      - POSTGRES_DB=faster_visa
      - POSTGRES_USER=saroar
      - POSTGRES_PASSWORD=password_vfs_@#
    volumes:
      - postgres_data:/var/lib/postgresql/data
    container_name: vfs_pg_db

# before 
volumes:
  logs_volume:
  logs_volume_2:
  postgres_data:
  static_volume:
  static_volume_2:
  media_volume:
  media_volume_2: