Essential Docker Commands Reference
System Information
Check Docker Version
docker version
Displays version information for both Docker client and server components.
View Docker System Details
docker info
Shows comprehensive system information including container counts, images, and configuration.
Access Command Help
docker --help
Displays usage information and lists all avail ...
Posted on Sat, 09 May 2026 05:29:59 +0000 by hobeau
Deploying and Operating Kafka with the wurstmeister/kafka Docker Image
Environment Setup
Operating System: CentOS 7
Docker Version: 17.03.2-ce
Docker Compose Version: 1.23.2
Docker Compose Configuration
To deploy Kafka with Zookeeper, create a docker-compose.yml file with the following content. This configuration avoids common issues like build failures and connection errors.
version: '2'
services:
zookeeper:
...
Posted on Thu, 07 May 2026 21:17:43 +0000 by TLawrence
Building a Custom CentOS 6 LNP Image with Docker
Environment Setup
A single CentOS 6.5 virtual machine is required, along with febootstrap and docker intsalled.
Installing febootstrap
yum install -y yum-priorities && rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm && rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
yum -y install febootstrap ...
Posted on Thu, 07 May 2026 16:29:22 +0000 by mk_silence
Building a Custom CentOS Image with Dockerfile: Commands, Best Practices, and Troubleshooting
Dockerfile is a declarative text file that defines the steps required to assemble a Docker image. It enables reproducible, version-controlled, and automated image builds—essential for modern containerized application delivery.
Core Build Workflow
Author a Dockerfile with instructions describing environment setup, dependencies, and runtime conf ...
Posted on Thu, 07 May 2026 07:06:50 +0000 by billkom