Nice initiative! I haven't used these before, maybe you could explain a bit, when you fell that it's ready for talking about?

It's just static code analysis at build time, see https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/about-code-scanning

In theory it should result in a failed CI build if it finds insecure coding practises, but I need to add a positive to check that.

The results can also be viewed in the security menu above (
), then "Code Scanning Alerts"

I generally enable the 'dependabot' in my repos as well, it will alert you when there's a security update for one of your nuget dependencies, and optionally raise a PR that updates the dependency for you... I don't believe I have permission to configure that on your repo though.

Btw, @wokket - I've enabled the dependabot for github actions and nuget packages. It seems to be just a file now (don't know what it was earlier): https://github.com/erikbra/grate/blob/main/.github/dependabot.yml

Just a quick update on this one, something has moved with the pre-release .Net6 so the 'autobuild' line now fails in my fork (https://github.com/wokket/grate/tree/security/code-scanning)... I vote we still hold off here until the RC world cleans up a bit.

Looks like the security build step is using .NET core 3.1:

/usr/share/dotnet/sdk/3.1.302/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(234,5): error NETSDK1005: Assets file '/home/runner/work/grate/grate/grate/obj/project.assets.json' doesn't have a target for '.NETFramework,Version=v6.0'

It seems to be running on mono/.net full framework: https://github.com/wokket/grate/runs/3910208595?check_suite_focus=true#step:4:1230

Or, maybe the problem is with the SDKs that are installed:

https://github.com/wokket/grate/runs/3910208595?check_suite_focus=true#step:4:45

  Running dotnet --info
  .NET SDK (reflecting any global.json):
   Version:   5.0.401
   Commit:    4bef5f3dbf
  
  Runtime Environment:
   OS Name:     ubuntu
   OS Version:  20.04
   OS Platform: Linux
   RID:         ubuntu.20.04-x64
   Base Path:   /usr/share/dotnet/sdk/5.0.401/
  
  Host (useful for support):
    Version: 5.0.10
    Commit:  e1825b4928
  
  .NET SDKs installed:
    2.1.302 [/usr/share/dotnet/sdk]
    2.1.403 [/usr/share/dotnet/sdk]
    2.1.526 [/usr/share/dotnet/sdk]
    2.1.617 [/usr/share/dotnet/sdk]
    2.1.701 [/usr/share/dotnet/sdk]
    2.1.818 [/usr/share/dotnet/sdk]
    3.1.119 [/usr/share/dotnet/sdk]
    3.1.202 [/usr/share/dotnet/sdk]
    3.1.302 [/usr/share/dotnet/sdk]
    3.1.413 [/usr/share/dotnet/sdk]
    5.0.104 [/usr/share/dotnet/sdk]
    5.0.207 [/usr/share/dotnet/sdk]
    5.0.303 [/usr/share/dotnet/sdk]
    5.0.401 [/usr/share/dotnet/sdk]

No .net 6. We can hold off until it goes GA, no probs, it's live in less than a month: https://www.dotnetconf.net/

Unfortunately that doesn't explain why it used to build, per the green ticks all through this PR 🤣

Edit: actually, maybe it never ran? I should know better than to try and review this stuff on my phone.... Either way I agree, housing off until we have an rtm release for this isn't the end of the world

I think I'll just merge this one, and we can work more on polishing it later :)
I got it to work on .NET 6