Docker base centos image
Introduction
Yes, here is another docker base image :) This image is intented to be used as base image to build other images on top.
This image is based on centos/centos7 image, see docker-base-ubuntu for a similar image with ubuntu.
Features
- Support for initialization scripts, e.g.
- Check for DB avaliability before application startup
- Create directory structure on the mounted volumes if needed
- Provision databases or file structures if needed
- Run data migrations on mounted volumes in case of software/image updates
- Support for multiple daemons via supervisord
- Set of predefined volumes for persitent data or logs (s. below)
How to use it
- Create a new image based on
artemsidorenko/base-centos - Create and add the according files for initialization or supervisord configuration. See examples below for it
Example Dockerfile can look likes this
FROM artemsidorenko/base-centos
MAINTAINER Artem Sidorenko <artem@2realities.com>
COPY assets/etc /etc
...
Folder structure
/var/lib/docker-state- mounted volume - some persistent data, e.g. generated encryption keys/var/log- mounted volume - logs/etc/docker-init/start.d- location for initialization scripts, see examples below/etc/supervisor.d- location for supervisor daemon configs, see examples below
Examples
Contributions
Please use GitHub Pull requests for this.
License and copyright
Copyright 2015 Artem Sidorenko and contributors.
See the COPYRIGHT file at the top-level directory of this distribution and at https://github.com/artem-sidorenko/docker-base-centos/blob/master/COPYRIGHT