Why Developers Are Opting for New Container Tools ๐
For years, Docker was the standard for running containerized applications, known for its speed, ease of use, and compatibility. However, by 2025, many teams have shifted to tools that are faster โก, safer ๐, and easier to manage ๐ ๏ธ.
Docker made a significant impact by changing the way we build and ship apps, with containers starting quickly, facilitating code packaging for universal execution, simplifying CI/CD pipelines, and integrating initially well with Kubernetes. Despite its past success, new challenges have emerged.
Today’s Challenges:
1. The Big Daemon: Docker relies on a central process, the Docker Daemon. If it crashes, all containers stop, and it poses security risks by running as root. Alternatives like containerd or CRI-O utilize lightweight processes with fewer permissions, avoiding these issues.
2. Docker Desktop’s Cost: Docker Desktop now requires a paid license for some companies, prompting developers to explore free alternatives like Podman, Colima, and Rancher Desktop.
3. Kubernetes Shift: Kubernetes has moved on from Docker, favoring tools like containerd and CRI-O that work directly with the Container Runtime Interface (CRI), simplifying setup and maintenance.
4. Podmanโs Advantages: Podman offers Docker CLI compatibility without requiring a daemon and runs without root, enhancing security.
Alternatives to Docker in 2025:
– Podman: Great for local development with Docker CLI compatibility.
– Colima: Lightweight, ideal for Mac users.
– nerdctl: Works well with containerd, suitable for CI/CD.
– containerd/CRI-O: Best for Kubernetes environments.
– Rancher Desktop: A GUI option for desktop users.
A Team’s Experience:
Using Docker for local microservices led to inconsistent environments, slow CI builds, and licensing limitations. They switched to podman-compose for development, nerdctl + containerd for CI/CD, and Rancher Desktop for a GUI preference. The results included 30% faster builds, no license issues, and an effortless transition to Podman.
Final Thoughts:
Docker remains valuable but is no longer the sole great container tool. Like jQuery in its time, Docker was revolutionary, but new tools are now available. Consider whether Docker is your best option, or if it’s simply a comfortable choice. 2025 might be the year to explore new tools. ๐