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Peng Zhi - PeerSpot reviewer
Manager at Deloitte
Real User
Top 10
Helps to run multiple virtual machines independently
Pros and Cons
  • "Docker allows you to run multiple virtual machines independently."
  • "The solution is not easy to manage and it is one of the reasons why people introduce orchestration tools to manage it."

What is most valuable?

Docker allows you to run multiple virtual machines independently. 

What needs improvement?

The solution is not easy to manage and it is one of the reasons why people introduce orchestration tools to manage it. 

For how long have I used the solution?

I have been using the solution for six to seven years. 

What do I think about the stability of the solution?

The tool's stability is high and I would rate it a ten out of ten. 

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Docker
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What do I think about the scalability of the solution?

We use the solution 24/7. 

How are customer service and support?

The tool is an open-source product and there is no technical support for it. 

Which solution did I use previously and why did I switch?

We use Hyper-V and VMware as per our client's requirements. 

How was the initial setup?

The tool's setup is difficult and I would rate it a two out of ten. The tool's POC can be completed in a couple of hours. However, if the project is big, then deployment can take around one to two months to complete. 

What's my experience with pricing, setup cost, and licensing?

The solution is an open-source technology and not a commercial product. However, you will have to pay sometimes. The tool's pricing depends on the vendor. 

What other advice do I have?

I would rate the product a nine out of ten. The solution is a virtualization technology that is more like a mini-computer. 

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
Sanchit Srivastava - PeerSpot reviewer
Senior Technical Lead at a consultancy with 10,001+ employees
Real User
Helps to replicate anything in the local machine using a simple command
Pros and Cons
  • "I think the best feature is to replicate anything in our local machine using a simple command."
  • "The product does not have an extensive documentation. The tool does not have good scenarios. We have to go through the GitHub repository and investigate similar scenarios. Also, if you are copying multiple things, then you can jeopardize the copy number. The copying aspect also lacks a UI part. We also need to limit the memory."

What is most valuable?

I think the best feature is to replicate anything in our local machine using a simple command. 

What needs improvement?

The product does not have an extensive documentation. The tool does not have good scenarios. We have to go through the GitHub repository and investigate similar scenarios. Also, if you are copying multiple things, then you can jeopardize the copy number. The copying aspect also lacks a UI part. We also need to limit the memory. 

For how long have I used the solution?

I have been using the tool for four years. 

What do I think about the stability of the solution?

The solution is stable. 

What do I think about the scalability of the solution?

The tool is very easy to scale up. My company has 100 percent usage for the product. 

How are customer service and support?

I have never contacted the support. I always look at GitHub instead of raising a ticket. 

How was the initial setup?

The product's setup is easy and straightforward. However, you will encounter difficulty in customization. The speed of the product's setup depends on the bandwidth and download speed. 

What's my experience with pricing, setup cost, and licensing?

The product is a free open-source tool. 

What other advice do I have?

I would rate the product a nine out of ten. 

Which deployment model are you using for this solution?

Private Cloud

If public cloud, private cloud, or hybrid cloud, which cloud provider do you use?

Microsoft Azure
Disclosure: PeerSpot contacted the reviewer to collect the review and to validate authenticity. The reviewer was referred by the vendor, but the review is not subject to editing or approval by the vendor.
PeerSpot user
Buyer's Guide
Docker
June 2025
Learn what your peers think about Docker. Get advice and tips from experienced pros sharing their opinions. Updated: June 2025.
860,632 professionals have used our research since 2012.
Sushant Sangam - PeerSpot reviewer
Specialist - Cloud Services and Software at NRG Energy, Inc.
Real User
Reliable, scalable, and useful application vitalization
Pros and Cons
  • "The scalability of Docker is good."
  • "Docker could improve by having security vulnerability reports."

What is our primary use case?

We are using Docker in our Java pipeline which is based on DevOps.

We use Docker because we do not have to set up an environment to let people try applications.

What needs improvement?

Docker could improve by having security vulnerability reports.

For how long have I used the solution?

I have been using Docker for approximately two years.

What do I think about the stability of the solution?

Docker is a stable solution, but there are some security vulnerabilities and that's why we are using security tools to point out if any vulnerabilities arise.

What do I think about the scalability of the solution?

The scalability of Docker is good.

We have most of our application running using Docker in our organization and there are over 1,000 people using the applications.

How are customer service and support?

I have not contacted the support from Docker.

Which solution did I use previously and why did I switch?

I have previously used Prisma but I found Docker has more features.

How was the initial setup?

The initial setup of Docker can be easy. However, it depends on the network you have Docker on.

What about the implementation team?

We have Docker configured everywhere and it took approximately one hour.

What's my experience with pricing, setup cost, and licensing?

There is a license needed to use Docker.

What other advice do I have?

My advice to others is they should use this solution. Previously we had to set everything up for small deployments in the environment, but with Docker, we can directly run the application in a container and pull any images. We don't need to set it up. We can use an image and we can directly set it up.

I rate Docker an eight out of ten.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
Unix/Linux Systems Administrator at a financial services firm with 10,001+ employees
Real User
Detailed documentation, simple to use, but vertical scaling could improve
Pros and Cons
  • "The most valuable features of Docker are its security, detailed documentation, and ease of use, and the Docker Swarm is not as complex as Kubernetes."
  • "If you install Docker on a host, it creates its own firewalls. It can become an issue. Usually, when you want to install Docker, you need to restart the firewall or restart the active tables on the machine, but this is not the case with Kubernetes. It uses the default set up by the next administrator, but with Docker, you have to restart the firewall and restart Docker before the firewall on the system will be okay. If you do not the rules will not be created."

What is our primary use case?

Docker is an open-source container runtime for running container images. We are using Docker Swarm which is similar to Kubernetes but from Docker.

What is most valuable?

The most valuable features of Docker are its security, detailed documentation, and ease of use, and the Docker Swarm is not as complex as Kubernetes.

There is a feature called overlay network for orchestrating containers in Docker Swarm which makes everything easy. You don't need a load balancer, which makes everything easy for accessing in one container. Additionally, it has internal DNS, which is not in Kubernetes.

What needs improvement?

If you install Docker on a host, it creates its own firewalls. It can become an issue. Usually, when you want to install Docker, you need to restart the firewall or restart the active tables on the machine, but this is not the case with Kubernetes. It uses the default set up by the next administrator, but with Docker, you have to restart the firewall and restart Docker before the firewall on the system will be okay. If you do not the rules will not be created.

For how long have I used the solution?

I have been using Docker for approximately six years.

What do I think about the stability of the solution?

The performance of Docker is good. We usually follow best practices before deploying Docker, we have not had any issues since deployment.

What do I think about the scalability of the solution?

Docker is scalable. However, If you want to vertically scale, you have to do it manually. It doesn't have autoscaling.

We have seven people using Docker in my organization.

How are customer service and support?

The support from Docker is very good. The documentation is rich, any issue you face, somebody already faced and the information is available.

How was the initial setup?

The main reason we are using the Docker Swarm instead of using Kubernetes is you can set up Docker Swarm within five minutes. Docker is easy to set up. Once you install it, you can run it. In this case, the container runtime becomes Docker. The reason why we are using it is the vendor recommended Docker for bank sector purposes. 

Setting up the master nodes in Docker is very easy.

What's my experience with pricing, setup cost, and licensing?

Docker is a free open-source solution. However, there is the Docker Enterprise which is a paid solution.

What other advice do I have?

The founder of Docker decided to move to Docker Enterprise to make revenue. There are many people moving away from Docker.

My advice to others is if you are using legacy applications they do not run well with containers. The person wanting to use Docker has to ask themself questions about themselves to determine if this solution is best. For example, the application that they want to run has to be scalable. People think Docker or Kubernetes is going to solve their problems, but no. If you have problems, it's going to amplify them, but if you have easy, smooth applications, it's going to make your life easier. The application itself has to be scalable. 

The application has to be container ready, such as login inputs, does it follow the 12-Factor principles of deployment, and has security. Even if you don't have security, Docker can help with security if you don't have application security.

You need to consider how you are going to patch the images or the applications and if it will work with languages on WiFi, such as Java, Python, or Ruby version.  Those are requirements you need to meet before deploying Docker. You have to find answers to many questions.

I rate Docker a seven out of ten.

I gave my rating a seven out of ten because autoscaling is necessary for cloud-native applications and it is not available. However, it's easy to use, scalable, and straightforward. It was the defacto container runtime for a long time until they went to an enterprise. Docker is very good in CI/CD. Anybody building images is using Docker to build the images and it works well with CI/CD.

Which deployment model are you using for this solution?

On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
Alexey Timchenko - PeerSpot reviewer
Senior Vice President Information Technology at TASC Towers
Real User
Top 5Leaderboard
Easy to use, provides a lot of flexibility, and enables users to deploy applications quickly
Pros and Cons
  • "Docker is convenient and easy to use."
  • "The stability could be improved."

What is our primary use case?

Docker helps us implement applications quickly.

What is most valuable?

Docker is convenient and easy to use. We can create and implement different types of virtual machines. It provides a lot of flexibility. The applications can be deployed quickly.

What needs improvement?

The stability could be improved.

What do I think about the stability of the solution?

The product is stable and reliable. I rate the stability a nine out of ten.

What do I think about the scalability of the solution?

Five engineers in the IT team use the product in our organization.

How are customer service and support?

The support team is fast, customer-friendly, knowledgeable, and quite professional.

How was the initial setup?

We didn't face any issues with the installation.

What about the implementation team?

We deployed the tool in-house.

What was our ROI?

The tool provides a return on investment. We are able to deploy some services and applications faster and be aligned with business requirements.

What's my experience with pricing, setup cost, and licensing?

We have a monthly subscription. The product is not expensive. I rate the pricing an eight out of ten.

What other advice do I have?

We do not use the solution often. It works well. We don’t have huge projects. I will recommend the tool to others. Everyone in IT uses Docker. Everyone knows it. At some level, a company must find a way to use Infrastructure as a Service by implementing different container technologies like Docker. Many IT personnel are aware of the solution. Overall, I rate the tool a nine out of ten.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
reviewer2404605 - PeerSpot reviewer
Senior Architect at a engineering company with 10,001+ employees
Real User
Top 10
Suitable for enterprises and helps with device management
Pros and Cons
  • "In our line of work, we've been involved in various sectors, such as industrial products, transportation, client engineering, telecom, and medical. For instance, we're currently developing an IT platform. One key use case we're tackling is device management."
  • "Docker needs to improve its pricing."

What is our primary use case?

In our line of work, we've been involved in various sectors, such as industrial products, transportation, client engineering, telecom, and medical. For instance, we're currently developing an IT platform. One key use case we're tackling is device management.

We're looking at managing devices within our setup. These devices send data or signals, which then get transferred to the cloud. It's all about handling the lifecycle of these devices, deploying them, and managing non-provisioned ones, both on our end and on the client's side.

What needs improvement?

Docker needs to improve its pricing. 

What do I think about the stability of the solution?

I rate Docker's stability a nine out of ten. 

What do I think about the scalability of the solution?

One of the primary reasons we use the tool is its scalability. It scales easily, and we haven't had any issues with it.

How are customer service and support?

Docker's support is user-friendly, fast, and knowledgeable. 

How was the initial setup?

The tool's deployment difficulty is medium.

What other advice do I have?

It tends to make sense as an investment for larger enterprises, but the cost might seem expensive for smaller businesses.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
Landry  Mbala - PeerSpot reviewer
Développeur applications at Trust Merchant Bank
Real User
Easy to manage, scale and creates lightweight applications
Pros and Cons
  • "Docker creates lightweight applications that are easy to manage and scale."
  • "Management can be improved with the necessary tools for orchestration."

What is our primary use case?

We are currently migrating some of our applications to Docker containers on the tenant to improve their performance.

We have already started migrating one application to Docker and Kubernetes. We plan to complete this migration within the next two days. Additionally, we plan to migrate our core banking software to microservices, which will be containerized using Docker and Kubernetes.

What is most valuable?

Docker is useful for container virtualization and installation of applications. Docker is a containerization tool that enables the installation of applications without the need for virtualization. Its primary advantage is that it allows for more efficient utilization of resources, such as with Oracle virtualization. 

The key difference between Docker and classic consolidation is that the former does not rely on a physical machine for resource allocation. Instead, Docker creates lightweight applications that are easy to manage and scale, making the process faster and more efficient.

Moreover, Docker's scalability and manageability are the most valuable features for me.

What needs improvement?

There is room for improvement in terms of management. Because to use Docker, we should also use Docker as an orchestrator. But if Docker had the necessary tools for management, it would be very good.

For how long have I used the solution?

I have been using Docker for one year. Moreover, I am using the latest version. 

What do I think about the stability of the solution?

It's stable because we just use it in a UAC environment.

What do I think about the scalability of the solution?

It is a very scalable solution. It is one reason we plan to migrate to Docker. It is very scalable. We still have technical people working on it. Most of the admins can work on those solutions.

How was the initial setup?

The initial setup of Docker is very simple and easy. If you know what you are doing, deploying the solution takes less than an hour. 

What about the implementation team?

The deployment process depends on how the solution was developed. For Docker, you need to install it and then use Docker to get the necessary image for your OS. It keeps access and depends on your OS. 

Once Docker is installed, you can get the necessary image for your solution. The deployment can be done in-house. 

What's my experience with pricing, setup cost, and licensing?

The licensing cost is not expensive. 

What other advice do I have?

Overall, I would rate the solution an eight out of ten. I would recommend using Docker if you are looking for a scalable solution. 

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
Ayman Allam - PeerSpot reviewer
DevOps and Automation Lead | Technical Expert at a comms service provider with 5,001-10,000 employees
Real User
Easy to set up, helps save on resources, and offers high availability
Pros and Cons
  • "The solution is stable."
  • "We'd like knowledge transfer to be easier."

What is our primary use case?

We use the solution for containerization. We've replaced it with other solutions. We are using it to compartmentalize some legacy products. We are also onboarding other third-party applications using it. We have a few use cases. 

What is most valuable?

It's helped to save many resources.

The features, such as scaling and high availability, have been excellent. 

It is easy to set up. 

The solution is stable.

It can scale well. 

What needs improvement?

The pricing could be a bit better. We'd like the least amount of spend as possible.

We'd like knowledge transfer to be easier.

The support could be better. 

The solution can be a bit expensive. 

For how long have I used the solution?

I've been using the solution for about six years so far. 

What do I think about the stability of the solution?

The solution has been pretty stable. 

What do I think about the scalability of the solution?

The solution can scale well. 

I'm not sure how many users are currently using the solution. We are migrating all development teams over to containers. 

How are customer service and support?

We have support from our vendor and also use support for the Kubernetes cluster. It could use some improvement. It could be a bit better. They should be more responsive. 

Which solution did I use previously and why did I switch?

I've been working with Kubernetes alongside other solutions. 

How was the initial setup?

The implementation, for me, was pretty simple. I'm not sure if others would have issues. 

I would deeply it on top of the Kubernetes cluster. It usually takes one day to deploy. We're using Docker as a service for testing purposes and have implemented it on Kubernetes clusters in order to test and deploy applications in order to handle production-grade applications. 

What was our ROI?

Have not looked into ROI to see if we have witnessed any. 

What's my experience with pricing, setup cost, and licensing?

I'm not sure what the exact pricing is. I don't deal with licensing. However, my understanding is it is expensive. 

What other advice do I have?

I started using the trial version and moved on to the latest version. 

I'd recommend the solution to others. I'd rate it nine out of ten. 

Which deployment model are you using for this solution?

On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
Buyer's Guide
Download our free Docker Report and get advice and tips from experienced pros sharing their opinions.
Updated: June 2025
Buyer's Guide
Download our free Docker Report and get advice and tips from experienced pros sharing their opinions.