ci(pipeline): enhance container image and helm chart setup

- Adds environment variables to streamline container image and helm chart configurations.
- Updates the helm-related commands to use the new environment variables for better maintainability.
- Ensures consistency in directory references for helm chart operations.

Author: winromulus

.github/workflows/pipeline.yaml

@@ -26,8 +26,12 @@ concurrency:
 
 env:
   containerImage: "kubernetes-reflector"
+  containerImageBuildContext: "src/"
+  containerImageBuildDockerfile: "src/ES.Kubernetes.Reflector/Dockerfile"
   dockerHubContainerImageRepository: "emberstack"
   ghcrContainerImageRepository: "ghcr.io/emberstack"
+  helmChart: "reflector"
+  helmChartDir: "src/helm/reflector"
 
 
 jobs:
@@ -126,13 +130,13 @@ jobs:
           mkdir -p .artifacts/kubectl
 
       - name: helm - import README
-        run: cp README.md src/helm/reflector/README.md
+        run: cp README.md ${{ env.helmChartDir }}/README.md
 
       - name: helm - package chart
-        run: helm package --destination .artifacts/helm --version ${{ env.gitVersion_SemVer }} --app-version ${{ env.gitVersion_SemVer }} src/helm/reflector
+        run: helm package --destination .artifacts/helm --version ${{ env.gitVersion_SemVer }} --app-version ${{ env.gitVersion_SemVer }} ${{ env.helmChartDir }}
 
       - name: helm - template chart
-        run: helm template --namespace kube-system reflector .artifacts/helm/reflector${{ env.gitVersion_SemVer }}.tgz > .artifacts/kubectl/reflector-${{ env.gitVersion_SemVer }}.yaml
+        run: helm template --namespace kube-system ${{ env.helmChart }} .artifacts/helm/${{ env.helmChart }}-${{ env.gitVersion_SemVer }}.tgz > .artifacts/kubectl/${{ env.helmChart }}-${{ env.gitVersion_SemVer }}.yaml
 
       - name: "artifacts - upload - helm chart"
         uses: actions/upload-artifact@v4
@@ -180,8 +184,8 @@ jobs:
       - name: docker - build and push
         uses: docker/build-push-action@v5
         with:
-          context: src/
-          file: src/ES.Kubernetes.Reflector/Dockerfile
+          context: ${{ env.containerImageBuildContext }}
+          file: s${{ env.containerImageBuildDockerfile }}
           push: ${{ needs.discovery.outputs.requiresBuildPush == 'true' }}
           provenance: false
           platforms: linux/amd64,linux/arm/v7,linux/arm64