Add Jenkins

cmd/image-builder/config.go

@@ -21,6 +21,7 @@ const (
 	Prow          CISystem = "Prow"
 	GithubActions CISystem = "GithubActions"
 	AzureDevOps   CISystem = "AzureDevOps"
+	Jenkins       CISystem = "Jenkins"
 )
 
 type Config struct {
@@ -155,6 +156,8 @@ func LoadGitStateConfig(ciSystem CISystem) (GitStateConfig, error) {
 	// Load from env specific for Github Actions
 	case GithubActions:
 		return loadGithubActionsGitState()
+	case Jenkins:
+		return loadJenksingGitState()
 	default:
 		// Unknown CI System, return error and empty git state
 		return GitStateConfig{}, fmt.Errorf("unknown ci system, got %s", ciSystem)
@@ -363,5 +366,11 @@ func determineUsedCISystem(envGetter func(key string) string, envLookup func(key
 		return AzureDevOps, nil
 	}
 
+	// JENKINS_HOME environment variable is set in Jenkins
+	_, isJenkins := envLookup("JENKINS_HOME")
+	if isJenkins {
+		return Jenkins, nil
+	}
+
 	return "", fmt.Errorf("cannot determine ci system: unknown system")
 }

cmd/image-builder/config_test.go

@@ -436,6 +436,13 @@ func Test_determineCISystem(t *testing.T) {
 			},
 			ciSystem: GithubActions,
 		},
+		{
+			name: "detect running in jenkins",
+			env: mockEnv{
+				"JENKINS_HOME": "/some/absolute/path",
+			},
+			ciSystem: Jenkins,
+		},
 		{
 			name: "unknown ci system",
 			env: mockEnv{

go.mod

@@ -1,6 +1,7 @@
 module github.com/kyma-project/test-infra
 
-go 1.22.0
+go 1.23
+
 toolchain go1.23.0
 
 require (