Fix #72 - allow KUBECONFIG to be set for override

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Update libraries for Go

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Bump k8s.io/api from 0.29.0 to 0.29.1

Bumps [k8s.io/api](https://github.com/kubernetes/api) from 0.29.0 to 0.29.1.
- [Commits](kubernetes/api@v0.29.0...v0.29.1)

---
updated-dependencies:
- dependency-name: k8s.io/api
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Set concurrency group for builds

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Bump k8s.io/client-go from 0.28.3 to 0.28.4

Bumps [k8s.io/client-go](https://github.com/kubernetes/client-go) from 0.28.3 to 0.28.4.
- [Changelog](https://github.com/kubernetes/client-go/blob/master/CHANGELOG.md)
- [Commits](kubernetes/client-go@v0.28.3...v0.28.4)

---
updated-dependencies:
- dependency-name: k8s.io/client-go
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Bump k8s.io/client-go from 0.26.3 to 0.27.1

Bumps [k8s.io/client-go](https://github.com/kubernetes/client-go) from 0.26.3 to 0.27.1.
- [Release notes](https://github.com/kubernetes/client-go/releases)
- [Changelog](https://github.com/kubernetes/client-go/blob/master/CHANGELOG.md)
- [Commits](kubernetes/client-go@v0.26.3...v0.27.1)

---
updated-dependencies:
- dependency-name: k8s.io/client-go
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Add the latest version of setup-go with caching

Caching is enabled by default in this action version

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Create .DEREK.yml

Fix CI

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Add CI

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>