Embed the Authorino version info into the binary

[guicassolato]

The Authorino version info can be specified as a build argument (VERSION) of the docker build command, which is then set as an ldflag in the go build command.

When using the Makefile:

1. If VERSION is not specified, it defaults to the Git ref (SHA-1) of HEAD;
2. The image tag (IMAGE_TAG) is inferred from the value of VERSION (user-defined or set to default):

• When it matches ^[0-9]+\.[0-9]+\.[0-9]+(-.+)?$ (e.g. '0.10.0-pre'), the tag is set to v$VERSION (e.g. 'v0.10.0-pre');
• otherwise, the tag is set to fixed value 'local'.

Additionally, a new parameter IMAGE_REPO was introduced to the Makefile (default: 'authorino'), and the existing parameter AUTHORINO_IMAGE now defaults to $(IMAGE_REPO):$(IMAGE_TAG).

In CI, VERSION is inferred based on GITHUB_REF_NAME:

• When the Git ref (branch/tag name) matches ^v[0-9]+\.[0-9]+\.[0-9]+(-.+)?$, VERSION is set to GITHUB_REF_NAME (with all slashes replaced with dashes);
• otherwise, VERSION is set to the actual Git ref (i.e. github.sha)

Also in this chnage:

• New make target docker-build
• Rename the binary to 'authorino' (previously: 'manager')

Verification steps

In all the scenarios below, you should be able to spot in the Auhtorino logs a message 'booting up authorino', with a label version, set to the value of the version build argument.

Scenario: Build and run the binary locally

Setup a cluster to target the service to:

kind create cluster
kubectl create namespace authorino-operator && kubectl apply -f https://raw.githubusercontent.com/Kuadrant/authorino-operator/main/config/install/manifests.yaml && make install

Build and run the binary locally:

make build
KUBECONFIG=$HOME/.kube/config ./bin/authorino

Try with a version number:

make build VERSION=0.10.0-pre
KUBECONFIG=$HOME/.kube/config ./bin/authorino

Cleanup:

kind delete cluster

Scenario: Build and run container image in docker

Setup a cluster to target the service to:

kind create cluster
kubectl create namespace authorino-operator && kubectl apply -f https://raw.githubusercontent.com/Kuadrant/authorino-operator/main/config/install/manifests.yaml && make install

Build and run container image in docker:

make docker-build
docker run \
  -v $HOME/.kube/config:/home/.kube/config \
  --env KUBECONFIG=/home/.kube/config \
  --network=host \
  authorino:local

Try with a version number:

make docker-build VERSION=0.10.0-pre
docker run \
  -v $HOME/.kube/config:/home/.kube/config \
  --env KUBECONFIG=/home/.kube/config \
  --network=host \
  authorino:v0.10.0-pre

Cleanup:

kind delete cluster

Scenario: Build and run container image in kubernetes

make local-setup FF=1

Cleanup:

make local-cleanup