fix(ci): add gitlab ci detection

internal/ci/ci.go

@@ -3,10 +3,11 @@ package ci
 import (
 	"fmt"
 
-	"github.com/Nightapes/go-semantic-release/internal/gitutil"
-	log "github.com/sirupsen/logrus"
 	"os"
 	"strings"
+
+	"github.com/Nightapes/go-semantic-release/internal/gitutil"
+	log "github.com/sirupsen/logrus"
 )
 
 //ProviderConfig struct
@@ -43,6 +44,7 @@ func GetCIProvider(gitUtil *gitutil.GitUtil, envs map[string]string) (*ProviderC
 	services := []Service{
 		Travis{},
 		GithubActions{},
+		GitlabCI{},
 		Git{gitUtil: gitUtil}, // GIt must be the last option to check
 	}
 

internal/ci/ci_test.go

@@ -111,6 +111,19 @@ func TestCi(t *testing.T) {
 			result:   &ci.ProviderConfig{IsPR: false, PR: "", PRBranch: "", Branch: "feature-branch-1", Tag: "", Commit: "190bfd6aa60022afd0ef830342cfb07e33c45f37", BuildURL: "", Service: "GithubActions", Name: "GithubActions CI"},
 			hasError: false,
 		},
+		{
+			service: "GitLab CI/CD PR",
+			envs: map[string]string{
+				"GITLAB_CI":          "true",
+				"CI_COMMIT_SHA":      "190bfd6aa60022afd0ef830342cfb07e33c45f37",
+				"CI_COMMIT_REF_NAME": "master",
+				"CI_COMMIT_TAG":      "tag",
+				"CI_PROJECT_URL":     "https://my.gitlab.com",
+				"CI_PIPELINE_ID":     "1",
+			},
+			result:   &ci.ProviderConfig{IsPR: false, PR: "", PRBranch: "", Branch: "master", Tag: "tag", Commit: "190bfd6aa60022afd0ef830342cfb07e33c45f37", BuildURL: "https://my.gitlab.com/pipelines/1", Service: "gitlab", Name: "GitLab CI/CD"},
+			hasError: false,
+		},
 	}
 
 	for _, config := range testConfigs {

internal/ci/gitlab_ci.go

@@ -0,0 +1,26 @@
+package ci
+
+import (
+	"fmt"
+)
+
+//GitlabCI struct
+type GitlabCI struct{}
+
+//Detect if on GitlabCI
+func (t GitlabCI) detect(envs map[string]string) (*ProviderConfig, error) {
+
+	if _, exists := envs["GITLAB_CI"]; !exists {
+		return nil, fmt.Errorf("not running on gitlab")
+	}
+
+	return &ProviderConfig{
+		Service:  "gitlab",
+		Name:     "GitLab CI/CD",
+		Commit:   envs["CI_COMMIT_SHA"],
+		Tag:      envs["CI_COMMIT_TAG"],
+		BuildURL: envs["CI_PROJECT_URL"] + "/pipelines/" + envs["CI_PIPELINE_ID"],
+		Branch:   envs["CI_COMMIT_REF_NAME"],
+		IsPR:     false,
+	}, nil
+}