How many here use or plan to use Docker?
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Nish Nishant wrote:
Are you using Docker or similar technologies today?
Yes, in fact it's currently my main task
Nish Nishant wrote:
What's been your experience like?
Pretty much wholly positive - though we're almost a classic use case. We're containerising our build system which is a mix of gulp and webpack builds across JavaScript and Typescript code bases (deprecating the former in favour of the latter) as well as cordova apps.The platform (.net) team at the other end of the corridor is doing something similar.
Nish Nishant wrote:
What stack do you use it on?
Linux - the host machine doesn't matter too much, the containers are either apline or debian. From there we build the container to do what we want, such a "be a gulp environment" or "be a cordova build system". Not tried it on Windows, the other team seems to think it's fine. Doesn't work fully on Macs - runs inside an actual VM, but can be used for testing.
KeithBarrow.net[^] - It might not be very good, but at least it is free!
How's your development/debugging experience? Do you create local docker containers? Or do you connect to a remote docker image/instance? (example on AWS/Azure)
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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Haven't used it yet, but I'd very much like to. I'm sure it has its problems, but it would sure as hell solve a lot of them too! The company I currently work for has been talking about it, but they're still on Windows 7 so it's a no-go for them (for now). They do have lots of services that all depend on one another though, so Docker would certainly help in automated testing and deployment.
Best, Sander Continuous Integration, Delivery, and Deployment arrgh.js - Bringing LINQ to JavaScript Object-Oriented Programming in C# Succinctly
Thanks.
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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[Search Results for “docker” – Marc Clifton](https://marcclifton.wordpress.com/?s=docker) That might help. ;)
Latest Article - Building a Prototype Web-Based Diagramming Tool with SVG and Javascript Learning to code with python is like learning to swim with those little arm floaties. It gives you undeserved confidence and will eventually drown you. - DangerBunny Artificial intelligence is the only remedy for natural stupidity. - CDP1802
Thank you. Will be good to read some critical and not so positive write-ups too I suppose. :)
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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I use Docker to create encapsulated, versioned development environments for my projects. That way I can have different package versions installed side by side, and can easily rollback environment changes. See my [Luffer](https://github.com/xperroni/luffer) project for details.
"Whereas smaller computer languages have features designed into them, C++ is unusual in having a whole swathe of functionality discovered, like a tract of 19th century Africa." -- Verity Stob http://www.theregister.co.uk/2006/05/05/cplusplus\_cli/
Nice - thank you. Can you talk about you local dev experience? Do you cerate a docker image locally and work against that?
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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Nice - thank you. Can you talk about you local dev experience? Do you cerate a docker image locally and work against that?
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
Yes, I run the docker container locally in detached mode, with the base directory of my project mapped into it, and use `docker exec` to send it commands. This is all automated / abstracted away by [Luffer](https://github.com/xperroni/luffer), the tool I mentioned earlier.
"Whereas smaller computer languages have features designed into them, C++ is unusual in having a whole swathe of functionality discovered, like a tract of 19th century Africa." -- Verity Stob http://www.theregister.co.uk/2006/05/05/cplusplus\_cli/
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Thank you. How do you do local dev/debugging? Always connect to the remote docker image/instance?
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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Someone here set up some scripts to create the docker images and configure them. From what I understand I connect to the local docker instance.
Thanks.
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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Yes, I run the docker container locally in detached mode, with the base directory of my project mapped into it, and use `docker exec` to send it commands. This is all automated / abstracted away by [Luffer](https://github.com/xperroni/luffer), the tool I mentioned earlier.
"Whereas smaller computer languages have features designed into them, C++ is unusual in having a whole swathe of functionality discovered, like a tract of 19th century Africa." -- Verity Stob http://www.theregister.co.uk/2006/05/05/cplusplus\_cli/
Excellent. Thank you for the info.
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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Nano Server?
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
There's that and Docker for Windows[^].
This space for rent
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Don't use the term "virtual machine" when close to Docker people, unless you are eager to listen to a 45 minute intense talk that Docker is NOT, I repeat: NOT virualization! Virtualization is evil, Docker is good! And Docker isn't even "lightweight" virtualization. It is useless trying to discuss definitions of "virtualization" with Docker guys, or trying to compare the Docker way of providing isolation with a hypothetical minmal VM providing exactly those functions that your application needs while still being a VM (for the purpose of learning the details of what is so evil about virtualization). It is no use. The answer is given: VMs are evil, by definition. On the more serious side: Yes, the Docker demon is managed by a Linux kernel even in the Windows implemnentation. This is not a Linux virtual machine. On Windows 10, the Docker demon runs inside a Hyper-V VM (so it requires a 64 bit CPU with Extended Page Tables. (On Server 2016 the implementation is somewhat different, and does not use Hyper-V.) You can run Linux docker images in a Windows implementation; the Linux kernel functions are executed by the same kernel that runs the demon. You can obviously also run Windows docker images on Windows, but currently, the demon is in either Linux or Windows mode; it cannot run both flavors side by side. (I have seen rumours that this is being worked on, and will be possible in a future release.) The Linux implementation cannot run Windows images. Docker is essentially suited for backend services: Until you start doing fancy tricks, a container's only interface to the world outside the Docker demon is one or more TCP ports, or for persistent data: Mapping (parts of) an external file system as a Docker volume. There are two main alternatives for providing some sort of user interface: Either the container runs a web server, or you hook up a SSH console to it. In principle, I guess you could run e.g. an X.11 client in a Docker contiainer to give it a GUI interface; I doubt that anyone has seriously done anything like that. I guess that Docker is as suitable for web servers running on a Windows host as for web servers running on a Linux host. But applications running a Windows GUI of any kind cannot be adapted to Docker. Nor can any application that requires user interaction for installation, installation must be pure command-line based, with all parameters supplied either on the call line or in a setup/ini-file. When used for what it is good at, Docker is OK. Strechin
Thanks, that clears things up a lot. I knew Docker is not a virtual machine, but did not know how to call it otherwise, maybe "containerization platform" would fit the bill ?
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Why would you want to run a UI app in Docker?
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
Mainly for testing purposes so our tester has a ready to run Windows testing environment that can be produced by our Continuous Integration pipeline.
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There's that and Docker for Windows[^].
This space for rent
Ah thanks.
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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Mainly for testing purposes so our tester has a ready to run Windows testing environment that can be produced by our Continuous Integration pipeline.
That makes sense.
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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Are you using Docker or similar technologies today? What's been your experience like? What stack do you use it on? Thank you.
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
I use VMWare/VMPlayer when I need to test my development under different environments. I believe Docker, or its original incarnation, was initially created to develop applications that would run within their own OS\VM-like process so that applications could be distributed without any concerns for the configuration of the host operating systems. That phase of this development appeared to have petered out a number of years ago leaving everyone with the new construct that the current version of Docker is today. Technically, I never understood the need for such implementations if an organization is primarily supporting one major operating system. Those that support multiple operating systems are doing it for one of two reasons; the organization has a definitive requirement to do so or they are simply stupid and like to have additional complexity in their environments so they can feel important. In any event, though the explanations here as to what Docker actually is may be correct; to me nonetheless, it is just another form of virtualization even if the Docker supporters deny this... :)
Steve Naidamast Sr. Software Engineer Black Falcon Software, Inc. blackfalconsoftware@outlook.com
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I use VMWare/VMPlayer when I need to test my development under different environments. I believe Docker, or its original incarnation, was initially created to develop applications that would run within their own OS\VM-like process so that applications could be distributed without any concerns for the configuration of the host operating systems. That phase of this development appeared to have petered out a number of years ago leaving everyone with the new construct that the current version of Docker is today. Technically, I never understood the need for such implementations if an organization is primarily supporting one major operating system. Those that support multiple operating systems are doing it for one of two reasons; the organization has a definitive requirement to do so or they are simply stupid and like to have additional complexity in their environments so they can feel important. In any event, though the explanations here as to what Docker actually is may be correct; to me nonetheless, it is just another form of virtualization even if the Docker supporters deny this... :)
Steve Naidamast Sr. Software Engineer Black Falcon Software, Inc. blackfalconsoftware@outlook.com
I am still trying to educate myself as to all the differences and pros and cons between containers vs VMs, and it's not easy to read past the marketing hype.
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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Are you using Docker or similar technologies today? What's been your experience like? What stack do you use it on? Thank you.
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
My naïveté made me think that I could run an ASP.NET app on Docker on Linux. It was not fun and it did not work (for me).
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My naïveté made me think that I could run an ASP.NET app on Docker on Linux. It was not fun and it did not work (for me).
ASP.NET Core should run okay, at least in theory. What problems did you run into if I may ask?
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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ASP.NET Core should run okay, at least in theory. What problems did you run into if I may ask?
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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Ah alright. It should be far easier today :-) See [Deploy .NET Core with Docker to EC2 Container Service](http://docs.servicestack.net/deploy-netcore-docker-aws-ecs)
Nish Nishant Consultant Software Architect Ganymede Software Solutions LLC www.ganymedesoftwaresolutions.com
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Don't use the term "virtual machine" when close to Docker people, unless you are eager to listen to a 45 minute intense talk that Docker is NOT, I repeat: NOT virualization! Virtualization is evil, Docker is good! And Docker isn't even "lightweight" virtualization. It is useless trying to discuss definitions of "virtualization" with Docker guys, or trying to compare the Docker way of providing isolation with a hypothetical minmal VM providing exactly those functions that your application needs while still being a VM (for the purpose of learning the details of what is so evil about virtualization). It is no use. The answer is given: VMs are evil, by definition. On the more serious side: Yes, the Docker demon is managed by a Linux kernel even in the Windows implemnentation. This is not a Linux virtual machine. On Windows 10, the Docker demon runs inside a Hyper-V VM (so it requires a 64 bit CPU with Extended Page Tables. (On Server 2016 the implementation is somewhat different, and does not use Hyper-V.) You can run Linux docker images in a Windows implementation; the Linux kernel functions are executed by the same kernel that runs the demon. You can obviously also run Windows docker images on Windows, but currently, the demon is in either Linux or Windows mode; it cannot run both flavors side by side. (I have seen rumours that this is being worked on, and will be possible in a future release.) The Linux implementation cannot run Windows images. Docker is essentially suited for backend services: Until you start doing fancy tricks, a container's only interface to the world outside the Docker demon is one or more TCP ports, or for persistent data: Mapping (parts of) an external file system as a Docker volume. There are two main alternatives for providing some sort of user interface: Either the container runs a web server, or you hook up a SSH console to it. In principle, I guess you could run e.g. an X.11 client in a Docker contiainer to give it a GUI interface; I doubt that anyone has seriously done anything like that. I guess that Docker is as suitable for web servers running on a Windows host as for web servers running on a Linux host. But applications running a Windows GUI of any kind cannot be adapted to Docker. Nor can any application that requires user interaction for installation, installation must be pure command-line based, with all parameters supplied either on the call line or in a setup/ini-file. When used for what it is good at, Docker is OK. Strechin
AFAIK, Docker for WindoZe is mostly meant for developing purposes and is not yet recommended for production(*) (at least last time I checked.) (*) Just as much as WindoZe recommended for production isn't either ...
