Use remote Docker Engine via SSH or using Docker context

[WojciechNagorski]

Steps to reproduce the issue:

1. Create the DockerClient that use connection via SSH

   using Docker.DotNet;
   DockerClient client = new DockerClientConfiguration(
   new Uri("ssh://user@host.com"))
    .CreateClient();

What actually happened?:

I've got an excetption:

Unhandled exception. System.Exception: Unknown URL scheme ssh
   at Docker.DotNet.DockerClient..ctor(DockerClientConfiguration configuration,
Version requestedApiVersion) in D:\work\Docker.DotNet\src\Docker.DotNet\DockerCl
ient.cs:line 135
   at Docker.DotNet.DockerClientConfiguration.CreateClient(Version requestedApiV
ersion) in D:\work\Docker.DotNet\src\Docker.DotNet\DockerClientConfiguration.cs:
line 54
   at Docker.DotNet.DockerClientConfiguration.CreateClient() in D:\work\Docker.D
otNet\src\Docker.DotNet\DockerClientConfiguration.cs:line 49
   at DockerTester.Program.Main(String[] args) in C:\Users\nagorski\RiderProject
s\DockerTester\DockerTester\Program.cs:line 21
   at DockerTester.Program.<Main>(String[] args)

What did you expect to happen?:

I should be able to use remote Docker via SSH. Currently Docker CLI has support for Docker context. I think I should be able to use Docker.DotNet API in the same way.

For Example, I can add Docker context using the following command:

docker context create --docker host=ssh://user@host.com --description="Remote engine" my-remote-engine

Then I can use the remote Docker engine using the --context parameter:

docker --context my-remote-engine images

More information:

• https://docs.docker.com/engine/security/protect-access/#use-ssh-to-protect-the-docker-daemon-socket
• https://docs.docker.com/engine/context/working-with-contexts/

Currently I can't use either Docker Engine via SSH or docker context.

Additional information:

Output of dotnet --info:

❯ dotnet --info
.NET SDK (reflecting any global.json):
 Version:   6.0.100-rc.1.21463.6
 Commit:    e627d556a1

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.19042
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\6.0.100-rc.1.21463.6\

Host (useful for support):
  Version: 6.0.0-rc.1.21451.13
  Commit:  d7619cd4b1

.NET SDKs installed:
  2.1.520 [C:\Program Files\dotnet\sdk]
  3.1.300 [C:\Program Files\dotnet\sdk]
  5.0.204 [C:\Program Files\dotnet\sdk]
  5.0.401 [C:\Program Files\dotnet\sdk]
  6.0.100-rc.1.21463.6 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.All 2.1.24 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.24 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.19 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.10 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.0-rc.1.21452.15 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.1.24 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.19 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.10 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.0-rc.1.21451.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 3.1.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 3.1.4 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 3.1.19 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 5.0.10 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.0-rc.1.21451.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET runtimes or SDKs:
  https://aka.ms/dotnet-download

What version of Docker.DotNet?:

latest

[behnam-basketasia]

@galvesribeiro do you have plan to fix add this ability? connect to docker with ssh

[schmik]

@behnam-basketasia I assume PR are most welcome ;-)

[codingbott]

There is already a fork TrapTech.Docker.DotNet.SSH which is providing the function you are asking for. Maybe that fork can merged into here. (https://github.com/TrapTech/Docker.DotNet) I personally would prefer that the ssh support is build into this lib here.

My use case: I'm not exposing docker api on remote hosts for security reasons. I also don't install any docker stuff on my windows computer. This is the reason why I rely on the the SSH. I also use the test containers linked in a comment before.