Dockerの評判・口コミ 全65件

What do you dislike?

You need to create docker image from your code, even if your code have a single line of change, whole image needs to be rebuild.

What do you like best?

Docker is an amazing tool, if you want a highly scalable application. It encapsulates your code into docker images which can run on any linux system kernal. You do not need to worry about your environment, as environment is contained in the docker image itself. Great if you have applications whose environment can interfere with each other. For example, one of your applications uses java 7, while the other one uses java 8. You can run both application on a single system by having separate images for both.

What do you dislike?

The software must fight for system resources, so sometimes the bottleneck is not the disk, CPU, network.. etc. They are the system resources, and that's hard to stop. I also don't like the awkward process of writing a Dockerfile. I think it should have done it easier, there are too many options with many subtle differences

What do you like best?

The easiness to download Dockerfiles, and to run them. DockerHub is a great place to find containers also. I like that the process separation is via cgroups, so it is not that heavyweight as virtual machines. I also like the integration with Ansible, so the build process is just an "Enter" away.

Recommendations to others considering the product

There's almost no rivalry to Docker, so better to learn it if you're doing DevOps!

What do you dislike?

Although Docker provides a way of containerization, it does not give a great way of orchestrating them. We do have an option of using Docker Swarm but it has a very high costing plus it does not have monitoring feature internally. We need to rely on external monitoring tools and pay for them as well while tools like Kubernetes have Docker support, does container orchestration and provide monitoring through Grafana as well.

What do you like best?

Docker is one of the best containerization tool out there. It has a great feature of creating platform independent software VMs that run as a container and uses internal kernel features namespace, resource isolation, cgroups, etc. All these can be accomplished by building images using simple to write and read Dockerfiles.

What do you dislike?

Sometimes i find difficult to open a docker container, may be due to some background issues.To start Docker Containers, it don't have comprehensive guidelines and therefore different containers may take different skills to implement.One thing which i dislike the most is that the containers share the same kernel and is less isolated than VMs.

What do you like best?

Docker is safer to deploy with a consistent container system. With just a single command, i set up Php and Nginx with Docker.The best part of it is, its simplicity.It is quite better than using a virtual machine in virtualBox because it is extremely configurable.Docker works on any device allowing all employees to make their own preferences for better productivity.

Recommendations to others considering the product

It is very useful and having a huge variety of apps that are ready to be deployed on your local machine.But taking some time to properly use it, is very important part.