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authorSuren A. Chilingaryan <csa@suren.me>2018-02-28 02:54:00 +0100
committerSuren A. Chilingaryan <csa@suren.me>2018-02-28 02:54:00 +0100
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+# Docker OS Images : Centos7
+
+Simple container used to have an os container running in openshift and ready to investigate using sysadmin tools. This image is based on [centos/s2i-core-centos7](https://hub.docker.com/r/centos/s2i-core-centos7) done by [sclorg](https://github.com/sclorg/s2i-base-container/tree/master/core).
+
+You can find information on this image and how to use it by visiting the [Dockerhub registry](https://github.com/startxfr/docker-images)
+
+This container contain updated core OS rpm (kernel, libs,...) as well as usefull tools like pwgen, tar, zip, psmisc, procps, coreutils, findutils, wget
+
+| [![Build Status](https://travis-ci.org/startxfr/docker-images.svg?branch=openshift)](https://travis-ci.org/startxfr/docker-images) | [Dockerhub Registry](https://hub.docker.com/r/startx/openshift-centos) | [Sources](https://github.com/startxfr/docker-images/OS/) | [STARTX Profile](https://github.com/startxfr) |
+|-------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------|----------------------------------------------------------------------|-----------------------------------------------|
+
+## Running from dockerhub registry
+
+* with `docker` you can run `docker run -it --name="centos" startx/openshift-centos` from any docker host
+* with `docker-compose` you can create a docker-compose.yml file with the following content
+```
+fedora:
+ image: startx/openshift-centos:latest
+ container_name: "os-ocp-centos7"
+ environment:
+ CONTAINER_TYPE: "os"
+ CONTAINER_SERVICE: "fedora"
+ CONTAINER_INSTANCE: "os-ocp-centos7"
+```
+
+## Using this image in your own container
+
+You can use this Dockerfile template to start a new personalized container based on this container
+ ```
+FROM startx/openshift-centos:latest
+#... your container specifications
+CMD ["/bin/sx"]
+```
+
+## Environment variable
+
+| Variable | Type | Mandatory | Description |
+|---------------------------|----------|-----------|--------------------------------------------------------------------------|
+| CONTAINER_INSTANCE | `string` | `yes` | Container name. Should be uning to get fine grained log and application reporting
+| CONTAINER_TYPE | `string` | `no` | Container family (os, service, application. could be enhanced
+| CONTAINER_SERVICE | `string` | `no` | Define the type of service or application provided
+| HOSTNAME | `auto` | `auto` | Container unique id automatically assigned by docker daemon at startup
+
+
+## For advanced users
+
+You you want to use this container and code to build and create locally this container. You can follow theses instructions to setup and working environment.
+
+This section will help you if you want to :
+* Get latest version of this container OS
+* Enhance container content by adding instruction in Dockefile before build step
+
+You must have a working environment with the source code of this repository. Read and follow [how to setup your working environment](https://github.com/startxfr/docker-images#setup-your-working-environment-mandatory) to get a working directory. The following instructions assume you are at the top level of your working directory.
+
+### Build & run a container using `docker`
+
+1. Jump into the container directory with `cd OS`
+2. Build the container using `docker build -t fedora .`
+3. Run this container
+ 1. Interactively with `docker run -it fedora`. If you add a second parameter (like `/bin/bash`) to will run this command instead of the default entrypoint. Usefull to interact with this container (ex: `/bin/bash`, `/bin/ps -a`, `/bin/df -h`,...)
+ 2. As a daemon with `docker run -d fedora`
+
+
+### Build & run a container using `docker-compose`
+
+1. Jump into the container directory with `cd OS`
+2. Run this container
+ 1. Interactively with `docker-compose up` Startup logs appears and escaping this command stop the container
+ 2. As a daemon with `docker-compose up -d`. Container startup logs can be read using `docker-compose logs`
+