Docker linked containers

Example of linking docker containers. Container created with ASP.NET Core Web API is connected with MSSQL database container to perform simple CRUD operations.

How to run locally

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• Download and start mssql server container

  docker run -e 'ACCEPT_EULA=Y' -e 'SA_PASSWORD=Testing123' -p 1433:1433   --name sqlserver -d microsoft/mssql-server-linux

• Publish the application and its dependencies to a folder for deployment to a hosting system

  dotnet publish -c Release -o out

• Build container for application

  docker build -t cities-api .

• Run created container and link with ms sql container

  docker run -it --rm -p 5000:5000 --link sqlserver -e   SQLSERVER_HOST=sqlserver cities-api

How to use application

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• HTTP GET method

  • For console or bash

    curl http://localhost:5000/api/cities

  • For Powershell

    Invoke-RestMethod http://localhost:5000/api/cities

• HTTP POST method

  • For bash

    curl -i -H "Content-Type: application/json" -X POST -d '{"name": "Minsk", "country": "Belarus", "population": 1800000}' http://localhost:5000/api/cities

  • For console

    curl -i -H "Content-Type:application/json" -X POST -d "{\"name\": \"Minsk\", \"country\": \"Belarus\", \"population\": 1800000}" http://localhost:5000/api/cities

  • For Powershell

    Invoke-RestMethod -Uri 'http://localhost:5000/api/cities' -Method Post -ContentType 'application/json' -Body '{"name": "Minsk", "country": "Belarus", "population": 1800000}'