HealthCheck

Problem

In new versions of Microsoft container images you can't simply run command to install curl. So how you can check status of your app?

Solution

Install package

dotnet add package MrRabbit.HealthChecks.Container.Client 

Edit your docker-compose.yml file

 healthcheck:
      test: [ "CMD", "dotnet", "/[PATH TO YOUR APP]/healthcheck.dll", "ADDRESS TO HEALTH CHECK ENDPOINT" ]

Example

 healthcheck:
      test: [ "CMD", "dotnet", "/app/healthcheck.dll", "http://localhost:8080/hc" ]

It works on container images chiseled version too.

Sample web app

How it works

Nuget packages adds content files which are copy to build output directory.

healthcheck.dll
healthcheck.runtimeconfig

You can run it from terminal in container

dotnet ./healthcheck.dll

Changelog

10.0.0

• added support for .net 10

9.0.1

• removed compilation runtime linux-x64 for any cpu support

9.0.0

• added support for .net 9

8.0.0

• first release