fix(stack): Skip SSL Verification (#3064)

* fix(stack): Skip SSL Verification

* fix(stack): Skip SSL Verification

* fix(stack): move httpsCli into service

* fix(stack): clean-up

* fix(stack): move httpsCli back into the function

* fix(stack): move httpsCli and InstallProtocol back into service

* fix(stack): clean-up debugging

* fix(stack): parameter cleanup

Co-Authored-By: Anthony Lapenna <anthony.lapenna@portainer.io>

api/cmd/portainer/main.go

@@ -102,7 +102,7 @@ func initLDAPService() portainer.LDAPService {
 }
 
 func initGitService() portainer.GitService {
-	return &git.Service{}
+	return git.NewService()
 }
 
 func initClientFactory(signatureService portainer.DigitalSignatureService, reverseTunnelService portainer.ReverseTunnelService) *docker.ClientFactory {

api/git/git.go

@@ -1,21 +1,37 @@
 package git
 
 import (
+	"crypto/tls"
+	"net/http"
 	"net/url"
 	"strings"
+	"time"
 
 	"gopkg.in/src-d/go-git.v4"
 	"gopkg.in/src-d/go-git.v4/plumbing"
+	"gopkg.in/src-d/go-git.v4/plumbing/transport/client"
+	githttp "gopkg.in/src-d/go-git.v4/plumbing/transport/http"
 )
 
 // Service represents a service for managing Git.
-type Service struct{}
+type Service struct {
+	httpsCli *http.Client
+}
 
 // NewService initializes a new service.
-func NewService(dataStorePath string) (*Service, error) {
-	service := &Service{}
+func NewService() *Service {
+	httpsCli := &http.Client{
+		Transport: &http.Transport{
+			TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+		},
+		Timeout: 300 * time.Second,
+	}
 
-	return service, nil
+	client.InstallProtocol("https", githttp.NewClient(httpsCli))
+
+	return &Service{
+		httpsCli: httpsCli,
+	}
 }
 
 // ClonePublicRepository clones a public git repository using the specified URL in the specified
@@ -32,7 +48,7 @@ func (service *Service) ClonePrivateRepositoryWithBasicAuth(repositoryURL, refer
 	return cloneRepository(repositoryURL, referenceName, destination)
 }
 
-func cloneRepository(repositoryURL, referenceName string, destination string) error {
+func cloneRepository(repositoryURL, referenceName, destination string) error {
 	options := &git.CloneOptions{
 		URL: repositoryURL,
 	}