diff --git a/pkg/runner/run_context.go b/pkg/runner/run_context.go
index 5abe348..2bde1bc 100644
--- a/pkg/runner/run_context.go
+++ b/pkg/runner/run_context.go
@@ -177,15 +177,15 @@ func (rc *RunContext) startJobContainer() common.Executor {
 			rc.JobContainer.UpdateFromEnv("/etc/environment", &rc.Env),
 			rc.JobContainer.Copy(ActPath+"/", &container.FileEntry{
 				Name: "workflow/event.json",
-				Mode: 0644,
+				Mode: 0o644,
 				Body: rc.EventJSON,
 			}, &container.FileEntry{
 				Name: "workflow/envs.txt",
-				Mode: 0666,
+				Mode: 0o666,
 				Body: "",
 			}, &container.FileEntry{
 				Name: "workflow/paths.txt",
-				Mode: 0666,
+				Mode: 0o666,
 				Body: "",
 			}),
 		)(ctx)
@@ -588,9 +588,16 @@ func (rc *RunContext) withGithubEnv(ctx context.Context, github *model.GithubCon
 	env["RUNNER_PERFLOG"] = github.RunnerPerflog
 	env["RUNNER_TRACKING_ID"] = github.RunnerTrackingID
 	if rc.Config.GitHubInstance != "github.com" {
-		env["GITHUB_SERVER_URL"] = fmt.Sprintf("https://%s", rc.Config.GitHubInstance)
-		env["GITHUB_API_URL"] = fmt.Sprintf("https://%s/api/v3", rc.Config.GitHubInstance)
-		env["GITHUB_GRAPHQL_URL"] = fmt.Sprintf("https://%s/api/graphql", rc.Config.GitHubInstance)
+		hasProtocol := strings.HasPrefix(rc.Config.GitHubInstance, "http://") || strings.HasPrefix(rc.Config.GitHubInstance, "https://")
+		if hasProtocol {
+			env["GITHUB_SERVER_URL"] = rc.Config.GitHubInstance
+			env["GITHUB_API_URL"] = fmt.Sprintf("%s/api/v3", rc.Config.GitHubInstance) // FIXME: gitea is v1 not v3
+			env["GITHUB_GRAPHQL_URL"] = fmt.Sprintf("%s/api/graphql", rc.Config.GitHubInstance)
+		} else {
+			env["GITHUB_SERVER_URL"] = fmt.Sprintf("https://%s", rc.Config.GitHubInstance)
+			env["GITHUB_API_URL"] = fmt.Sprintf("https://%s/api/v3", rc.Config.GitHubInstance)
+			env["GITHUB_GRAPHQL_URL"] = fmt.Sprintf("https://%s/api/graphql", rc.Config.GitHubInstance)
+		}
 	}
 
 	if rc.Config.ArtifactServerPath != "" {
diff --git a/pkg/runner/runner.go b/pkg/runner/runner.go
index f92d376..b0b74ad 100644
--- a/pkg/runner/runner.go
+++ b/pkg/runner/runner.go
@@ -56,9 +56,10 @@ type Config struct {
 	ReplaceGheActionWithGithubCom      []string          // Use actions from GitHub Enterprise instance to GitHub
 	ReplaceGheActionTokenWithGithubCom string            // Token of private action repo on GitHub.
 
-	PresetGitHubContext *model.GithubContext // the preset github context, overrides some fields like DefaultBranch, Env, Secrets etc.
-	EventJSON           string               // the content of JSON file to use for event.json in containers, overrides EventPath
-	ContainerNamePrefix string               // the prefix of container name
+	PresetGitHubContext   *model.GithubContext // the preset github context, overrides some fields like DefaultBranch, Env, Secrets etc.
+	EventJSON             string               // the content of JSON file to use for event.json in containers, overrides EventPath
+	ContainerNamePrefix   string               // the prefix of container name
+	DefaultActionInstance string               // the default actions web site
 }
 
 // Resolves the equivalent host path inside the container
diff --git a/pkg/runner/step_action_remote.go b/pkg/runner/step_action_remote.go
index 8afbe31..78b4d73 100644
--- a/pkg/runner/step_action_remote.go
+++ b/pkg/runner/step_action_remote.go
@@ -30,9 +30,7 @@ type stepActionRemote struct {
 	remoteAction        *remoteAction
 }
 
-var (
-	stepActionRemoteNewCloneExecutor = git.NewGitCloneExecutor
-)
+var stepActionRemoteNewCloneExecutor = git.NewGitCloneExecutor
 
 func (sar *stepActionRemote) prepareActionExecutor() common.Executor {
 	return func(ctx context.Context) error {
@@ -46,7 +44,7 @@ func (sar *stepActionRemote) prepareActionExecutor() common.Executor {
 			return fmt.Errorf("Expected format {org}/{repo}[/path]@ref. Actual '%s' Input string was not in a correct format", sar.Step.Uses)
 		}
 
-		sar.remoteAction.URL = sar.RunContext.Config.GitHubInstance
+		sar.remoteAction.URL = sar.RunContext.Config.DefaultActionInstance
 
 		github := sar.getGithubContext(ctx)
 		if sar.remoteAction.IsCheckout() && isLocalCheckout(github, sar.Step) && !sar.RunContext.Config.NoSkipCheckout {
@@ -54,7 +52,6 @@ func (sar *stepActionRemote) prepareActionExecutor() common.Executor {
 			return nil
 		}
 
-		sar.remoteAction.URL = sar.RunContext.Config.GitHubInstance
 		for _, action := range sar.RunContext.Config.ReplaceGheActionWithGithubCom {
 			if strings.EqualFold(fmt.Sprintf("%s/%s", sar.remoteAction.Org, sar.remoteAction.Repo), action) {
 				sar.remoteAction.URL = "github.com"
@@ -213,7 +210,11 @@ type remoteAction struct {
 }
 
 func (ra *remoteAction) CloneURL() string {
-	return fmt.Sprintf("https://%s/%s/%s", ra.URL, ra.Org, ra.Repo)
+	u := ra.URL
+	if !strings.HasPrefix(u, "http://") && !strings.HasPrefix(u, "https://") {
+		u = "https://" + u
+	}
+	return fmt.Sprintf("%s/%s/%s", u, ra.Org, ra.Repo)
 }
 
 func (ra *remoteAction) IsCheckout() bool {