Containers have become the most convenient method of deploying complex applications. This convenience is shared both by developers, who can comfortably work in the same environment as the final deployment, and by the staff responsible for installing, updating, monitoring, and troubleshooting the application, whether they are traditional sys admins or DevOps. Although several container solutions are present on the market, with varying levels of features, maturity, and flexibility, Docker is by far the most popular. In this article, I offer a couple of useful tips to make your work with Docker images and containers more efficient.
Be Careful with the “latest” Tag Despite its name, latest doesn’t mean the image tagged as such is actually its most recent version – it’s just the default value assigned to images that don’t have a tag assigned. Therefore, if you create an image without tagging it, it will be tagged latest – unless you specify another tag. Therefore, if you create new images with other tags, latest will not be the most recent.
Moreover, because latest is just a shortcut for the default value, it can be easily overwritten by other team members; that is, if you don’t tag your images, each new image pushed to the registry will have the latest tag automatically applied, which might create confusion.
この記事は ADMIN Network & Security の ADMIN #74: Software-Defined Networking 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
すでに購読者です ? サインイン
この記事は ADMIN Network & Security の ADMIN #74: Software-Defined Networking 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
すでに購読者です? サインイン
Manage projects in SMEs with OpenProject Best-Laid Plans
OpenProject supplies sensible, comprehensive project management for SMEs with few financial inputs.
Synchronize passwords in KeePass Digital Safe
Usernames and passwords play an important role in security. In this article, we show you how to set up the KeePass password manager and keep it synchronized across multiple devices.
Test mechanisms for best practices in cloud design Best Clouds
Develop resilient and efficient cloud infrastructures for enterprise applications with the AWS Well-Architected Framework. We show you how to implement the solutions from the framework in practical terms by providing an introduction to the AWS Well-Architected tool with an example.
Six new security features Windows Server 2022 for Shielded
Configure the Secured-core server components to reduce the attack surface of your system with minimal overhead.
Cooperation with Cyn.in Fast Action
Cyn.in open source groupware focuses on connecting employees quickly and easily. We show you how to set up a Cyn.in environment, exchange knowledge, collaborate on projects, and manage processes. By Holger Reibold
Passkeys eliminate the need for password-based authentication Password Overboard!
Passwords are becoming a thing of the past. We look into the basic weaknesses of passwords, explain what passkeys are all about, and assess their practicality.
Best practices when working with Docker images Shipshape
Whether you are developing containerized applications or running them, observing best practices helps to obtain optimal results.
Monitoring changes in Active Directory with built-in tools Tracking Down Attackers
Monitoring with built-in Windows tools can prevent the worst from happening after an attempted attack.
Discover vulnerabilities with Google Tsunami Before the Wave
Google Tsunami security scanner detects errors that typically signal danger and outputs alerts. We look into how you can get the tool up and running and even write the required plugins yourself.
Containers made simple Fully Automated
The Portainer graphical management interface makes it easy to deploy containers, relieving you of huge amounts of routine work you would normally have to handle with Docker, Podman, or Kubernetes. However, the licensing structure leaves something to be desired.
