Public | Automated Build

Last pushed: 4 days ago
Short Description
PostgreSQL database, extended and optimized for use with the Nuclos application server.
Full Description

Nuclos-DB Dockerfile

This repository contains the Dockerfile for PostgreSQL for Docker's automated build published to the public Docker Hub Registry.
This PostgreSQL has been extended and optimized for use with the Nuclos application server container.

Base Docker Image

Docker Tags

  • latest (default)
  • 10.4
  • 9.6

You can run a Nuclos-DB container with the following command. E.g.:
docker run --name nuclos-db-9.6 -d nuccess/nuclos-db:9.6


  1. Install Docker.

  2. Download automated build from public Docker Hub Registry: docker pull nuccess/nuclos-db

    (alternatively, you can build an image from Dockerfile: docker build -t="nuccess/nuclos-db"


docker run --name nuclos-db-9.6 -e TZ=Europe/Berlin -e LOCALE=de_DE.UTF-8 -p 5496:5432 -d nuccess/nuclos-db:9.6

Data Volume /var/nuclos-db

This directory acts as an interface for a Nuclos application server container. New files in this directory are automatically processed by the server container. You can also use this function to import or export a database dump (created with pg_dump). No need to install a PostgreSQL client on your host system or to connect to the container directly.

To access this volume from your host system, just mount it to a local directory using following command. E.g. -v /Users/Maik/Nuclos/Docker/vol-nuclos-db-9.6:/var/nuclos-db

  • Import a dump (pg_dump format)

  1. Copy the dump to the subdirectory /var/nuclos-db/backups. The name of the dump file must ensure following naming convention: schema#tag.backup (schema: The schema is then automatically created. If it already exists, it will be dropped before creating it again. tag: Name or timestamp, only to identify a dump). Example: myerp#2017-05-01.backup
  2. To instruct the container to import the dump, create a simple file schema#tag.imp in /var/nuclos-db, which is then automatically interpreted as a command. Example: echo "FileContentDoesNotMatter" > /Users/Maik/Nuclos/Docker/vol-nuclos-db-9.6/myerp#2017-05-01.imp (the mounted directory as explained in section "Data Volume").
  3. Once the import is completed, the recently created "command file" e.g. myerp#2017-05-01.imp will be deleted automatically.
  • Export a schema (pg_dump format)

  1. Create a simple file schema#tag.exp in /var/nuclos-db. Example: echo "FileContentDoesNotMatter" > /Users/Maik/Nuclos/Docker/vol-nuclos-db-9.6/myerp#2017-05-15.exp (the mounted directory as explained in section "Data Volume").
  2. Once the export is completed, this "command file" is deleted automatically. The exported dump will be stored in the subdirectory named backups. E.g. var/nuclos-db/backups
  • Execute SQL

  1. Save your SQL commands in one single file. Use the file name extension .sql and copy it to var/nuclos-db

Environment Variables


Set the timezone. Default is Europe/Berlin. -e TZ=Europe/Berlin


Set the locale. Default is de_DE.UTF-8. -e LOCALE=de_DE.UTF-8


The default PostgreSQL account is nuclos with password password. You can change the default password with this variable. -e DB_PASSWORD=gEhEiM


Set total usable RAM for the PostgreSQL process. Default is 1 GB. -e TOTAL_RAM_GB=4


PostgreSQL database connection limit. Default is 50. We recommend 50 connections per active Nuclos application server. -e MAX_CONNECTIONS=50

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Source Repository