CentOS-Docker-Container

This is my quick and custom Java on CentOS docker container. I expect to keep updating this container with more essentials like shell customisations, Linux utilities...etc.

Building The Docker Image

$ docker build -t mycentos .

Building & Running The Container

This is the quicker and preferred way. The Docker Compose file is used to maintain-as-code some context specific customisations like a preferred image name and bind mount (volume) mappings to specific directories. Mostly the customisations in docker-compose.yml file can be done using docker build command line options when building the image. However, the reason to prefer docker-compose is to codify these preferences.

$ docker-compose up

Prerequisites

The container maps a container volume sharedFolder to the local directory ../SharedFolder.

Interactive (No-Exit)

The docker-compose.yml is setting the options stdin_open and tty to keep the container up and running. This is required to keep the entry point of the CentOS container (/bin/bash) from exiting immediately.

SSH into the Container

$ docker exec -it mycentos bash

One liner to use this SSH-client-equipped container to SSH into a different host

$ function myssh() {
    docker container run --rm -it mycentos sshpass -p password ssh -o StrictHostKeyChecking=no user@${1}
}

$ myssh 10.50.30.27

Voila!