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Getting started with ASP.NET 5 and Docker

It is possible to run the sample apps using Docker and the ASP.NET 5 Preview Docker Image.

Get the source code

git clone git@github.com:aspnet/Home.git aspnet-home
cd aspnet-home/samples/latest/HelloWeb

Build a docker image

docker build -t aspnet-home-helloweb .

Run a docker container

docker run -it -p 5004:5004 aspnet-home-helloweb

See the HelloWeb sample in action

The URL to the sample app depends on how you are running Docker.

If you are using boot2docker:

open http://$(boot2docker ip):5004

Otherwise, you can access the sample app directly on localhost:

open http://localhost:5004

Stop the container

You can stop the docker container by pressing Enter in the console, or by using docker ps to identify the container id followed by docker stop <container id>.

Learn more

Detailed instructions on how to use the ASP.NET 5 Preview Docker Image can be found on http://blogs.msdn.com/b/webdev/archive/2015/01/14/running-asp-net-5-applications-in-linux-containers-with-docker.aspx. Please note that the kpm and k tools have been renamed since that article was published.

Getting started with ASP.NET 5 and Linux

Tested on: Ubuntu 14.04, Mint 17.01

This section deals with setting up a machine to run applications without the Docker image.

As with all other operating systems you need DNVM to get going with ASP.NET 5. To get it you run curl to download a .sh file and then run it. To configure a Linux machine to run an ASP.NET 5 application use the following instructions.

The steps to set up a Linux machine are:

  • Get a working version of Mono
  • Get and compile libuv (Required for the Kestrel server)
  • Get DNVM
  • Add sources to NuGet.config (For package restore)

Prerequisites

  • Unzip
  • Curl

Get Unzip

Unzip is needed to unpack runtime packages.

sudo apt-get install unzip

Get Curl

Curl is a command line tool for transferring data specified with URL syntax.

sudo apt-get install curl

Get Mono

Mono is how .NET applications can run on platforms other than Windows. Mono is an ongoing effort to port the .NET Framework to other platforms. In the process of developing ASP.NET 5 we worked with the Mono team to fix some bugs and add features that are needed to run ASP.NET applications. These changes are only in builds of mono that are greater than 4.0.1.

To get these builds you need to run:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
echo "deb http://download.mono-project.com/repo/debian wheezy main" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list
sudo apt-get update
sudo apt-get install mono-complete

Get libuv

Libuv is a multi-platform asynchronous IO library that is used by the KestrelHttpServer that we will use to host our web applications.

To build libuv you should do the following:

sudo apt-get install automake libtool
curl -sSL https://github.com/libuv/libuv/archive/v1.4.2.tar.gz | sudo tar zxfv - -C /usr/local/src
cd /usr/local/src/libuv-1.4.2
sudo sh autogen.sh
sudo ./configure
sudo make 
sudo make install
sudo rm -rf /usr/local/src/libuv-1.4.2 && cd ~/
sudo ldconfig

NOTE: make install puts libuv.so.1 in /usr/local/lib, in the above commands ldconfig is used to update ld.so.cache so that dlopen (see man dlopen) can load it. If you are getting libuv some other way or not running make install then you need to ensure that dlopen is capable of loading libuv.so.1.

Get DNVM

Now let's get DNVM. To do this run:

sudo apt-get install unzip
curl -sSL https://raw.githubusercontent.com/aspnet/Home/dev/dnvminstall.sh | DNX_BRANCH=dev sh && source ~/.dnx/dnvm/dnvm.sh

Once this step is complete you should be able to run dnvm and see some help text.

Add Sources to NuGet.config

Now that we have DNVM and the other tools needed to run an ASP.NET application we need to add the development configuration sources to get nightly builds of all the ASP.NET packages.

The nightly package source is: https://www.myget.org/F/aspnetvnext/api/v2/

To add this to your package sources you need to edit the NuGet.config.

Edit: ~/.config/NuGet/NuGet.config

The NuGet.config file should look something like the following:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <add key="AspNetVNext" value="https://www.myget.org/F/aspnetvnext/api/v2/" />
    <add key="nuget.org" value="https://www.nuget.org/api/v2/" />
  </packageSources>
  <disabledPackageSources />
</configuration>

The important part of this is that you have a package source with aspnetvnext and nuget.org in it.