version: "3.8"

# Docker compose recipe for InvenTree
# - Runs PostgreSQL as the database backend
# - Runs Gunicorn as the InvenTree web server
# - Runs the InvenTree background worker process
# - Runs nginx as a reverse proxy

# ---------------------------------
# IMPORTANT - READ BEFORE STARTING!
# ---------------------------------
# Before running, ensure that you change the "/path/to/data" directory,
# specified in the "volumes" section at the end of this file.
# This path determines where the InvenTree data will be stored!
# 

services:
    # Database service
    # Use PostgreSQL as the database backend
    # Note: this can be changed to a different backend,
    #       just make sure that you change the INVENTREE_DB_xxx vars below
    inventree-db:
        container_name: inventree-db
        image: postgres
        ports:
            - 5432/tcp
        environment:
            - PGDATA=/var/lib/postgresql/data/pgdb
            # The pguser and pgpassword values must be the same in the other containers
            - POSTGRES_USER=pguser
            - POSTGRES_PASSWORD=pgpassword
        volumes:
            # Map 'data' volume such that postgres database is stored externally
            - data:/var/lib/postgresql/data/
        restart: unless-stopped

    # InvenTree web server services
    # Uses gunicorn as the web server
    inventree-server:
        container_name: inventree-server
        image: inventree/inventree:latest
        expose:
            - 8000
        depends_on:
            - inventree-db
        volumes:
            # Data volume must map to /home/inventree/data
            - data:/home/inventree/data
        environment:
            # Default environment variables are configured to match the 'db' container
            # Note: If you change the database image, these will need to be adjusted
            # Note: INVENTREE_DB_HOST should match the container name of the database
            - INVENTREE_DB_USER=pguser
            - INVENTREE_DB_PASSWORD=pgpassword
            - INVENTREE_DB_ENGINE=postgresql
            - INVENTREE_DB_NAME=inventree
            - INVENTREE_DB_HOST=inventree-db
            - INVENTREE_DB_PORT=5432
        restart: unless-stopped

    # Background worker process handles long-running or periodic tasks
    inventree-worker:
        container_name: inventree-worker
        image: inventree/inventree:latest
        entrypoint: ./start_prod_worker.sh
        depends_on:
            - inventree-db
            - inventree-server
        volumes:
            # Data volume must map to /home/inventree/data
            - data:/home/inventree/data
        environment:
            # Default environment variables are configured to match the 'db' container
            # Note: If you change the database image, these will need to be adjusted
            # Note: INVENTREE_DB_HOST should match the container name of the database
            - INVENTREE_DB_USER=pguser
            - INVENTREE_DB_PASSWORD=pgpassword
            - INVENTREE_DB_ENGINE=postgresql
            - INVENTREE_DB_NAME=inventree
            - INVENTREE_DB_HOST=inventree-db
            - INVENTREE_DB_PORT=5432
        restart: unless-stopped

    # nginx acts as a reverse proxy
    # static files are served directly by nginx
    # media files are served by nginx, although authentication is redirected to inventree-server
    # web requests are redirected to gunicorn
    # NOTE: You will need to provide a working nginx.conf file!
    inventree-proxy:
        container_name: inventree-proxy
        image: nginx
        depends_on:
            - inventree-server
        ports:
            # Change "1337" to the port that you want InvenTree web server to be available on
            - 1337:80
        volumes:
            # Provide ./nginx.conf file to the container
            # Refer to the provided example file as a starting point
            - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro
            # nginx proxy needs access to static and media files
            - data:/var/www
        restart: unless-stopped

volumes:
    # NOTE: Change /path/to/data to a directory on your local machine
    # Persistent data, stored external to the container(s)
    data:
        driver: local
        driver_opts:
            type: none
            o: bind
            # This directory specified where InvenTree data are stored "outside" the docker containers
            # Change this path to a local system path where you want InvenTree data stored
            device: /path/to/data