ASP.NET Docker image

Author: Lander Van den Bulcke

Disclaimer: This was made as a school assignment. Therefore, no guarantees in terms of quality/functionality. ;)

Docker compose

Preparing application

$ cd app
$ dotnet restore
$ dotnet publish -c Release -o out
$ cd ..

Run entire stack

$ docker-compose up -d

Stop stack

$ docker-compose stop

Stop stack and remove images

$ docker-compose down

Manual

Building the image

$ cd app
$ dotnet restore
$ dotnet publish -c Release -o out
$ cd ..
$ docker build -t landervdb/dotnet-demo .

Create container

$ docker run --name dotnet-demo -p 5000:5000 --link sql-server-demo -e SQLSERVER_HOST=sql-server-demo -d landervdb/dotnet-demo

This command assumes there is already a sql-server container running with the name sql-server-demo (see sql-server folder).

Stop container

$ docker stop dotnet-demo

Start container

$ docker start dotnet-demo

Changes made in application code

• Program.cs:

var host = new WebHostBuilder()
                .UseUrls("http://*:5000") // Dit toevoegen
                .UseKestrel()
                .UseContentRoot(Directory.GetCurrentDirectory())
                .UseIISIntegration()
                .UseStartup<Startup>()
                .Build();

• Startup.cs:

using System;

//...

var hostname = Environment.GetEnvironmentVariable("SQLSERVER_HOST") ?? "localhost";
            var connString = $"Data Source={hostname};Initial Catalog=demoapp;User ID=demouser;Password=DemoPass12;";

            services.AddDbContext<ApplicationDbContext>(options => options.UseSqlServer(connString));

• General:

$ dotnet migrate

Sources

• http://blog.kontena.io/dot-net-core-and-sql-server-in-docker/
• https://github.com/DataGrip/docker-env/tree/master/mssql-server-linux
• https://github.com/twright-msft/mssql-node-docker-demo-app
• https://docs.docker.com/compose/gettingstarted