Tags: Docker

How To Install and Use Docker Compose on CentOS 7

Docker Compose is a tool that allows you to define and run multi-container Docker applications. With Compose, you define the application’s services, networks and volumes in a single YAML file, then spin your application with a single command. Compose can be used for different purposes such as...
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Keeping the Software in Docker Containers Up to Date

Docker has radically changed the way admins roll out their software in many companies. However, regular updates are still needed. How does this work most effectively with containers? From an admin's point of view, Docker containers have much to recommend them: They can be operated with reduced...
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3 Docker Compose Features for Improving Team Development Workflow

A developer today is bombarded with a plethora of tools that cover every possible problem you might have—but, selecting which tools to use is The New Problem. Even in container-land, we're swimming in an ocean of tool choices, most of which didn't exist a few years ago. I'm here to help. I make a...
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Running a Container with a Non-Root User

One best practice when running a container is to launch the process with a non root user. This is usually done through the usage of the USER instruction in the Dockerfile. But, if this instruction is not present it doesn’t necessary mean the process is run as root. The rational By default, root in...
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ctop – Top-like Interface for Monitoring Docker Containers

ctop is a free open source, simple and cross-platform top-like command-line tool for monitoring container metrics in real-time. It allows you to get an overview of metrics concerning CPU, memory, network, I/O for multiple containers and also supports inspection of a specific container. At the time...
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10+ Top Open-Source Tools for Docker Security

For container security, you'll find plenty of open-source tools that can help prevent another debacle like the one at Tesla, which suffered a Kubernetes cluster breach. But container security is still tricky, so you need to know which utilities to add to your arsenal. Sure, there are commercial...
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Persistent Volumes for Docker Containers

Docker guarantees the same environment on all target systems: If the Docker container runs for the author, it also runs for the user and can even be preconfigured accordingly. Although Docker containers seem like a better alternative to the package management of current distributions (i.e., RPM and...
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Docker Guide: Dockerizing Python Django Application

Docker is an open-source project that provides an open platform for developers and sysadmins to build, package, and run applications anywhere as a lightweight container. Docker automates the deployment of applications inside software containers. Django is a web application framework written in...
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8 Surprising Facts about Real Docker Adoption

With thousands of companies using Datadog to monitor their infrastructure and applications, we can see software trends emerging in real time. Today we're excited to share our latest research into Docker adoption and usage. Increasingly, Docker is not being run as a standalone technology but as part...
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Buildah 1.0: Linux Container Construction Made Easy

The good news about containers, such as Docker's, is they make it easy to deploy applications, and you can run far more of them on a server than you can on a virtual machine. The bad news is that putting an application into a container can be difficult. That's where Buildah comes in. Buildah is a...
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