Added ssh identity file to registration command and make ssh password optional

CHANGELOG.md

@@ -2,6 +2,7 @@ v 0.4.0
 - Added CI=true and GITLAB_CI=true to environment variables
 - Added output_limit (in kilobytes) to runner config which allows to enlarge default build log size
 - Added support for custom variables received from CI
+- Added support for SSH identity file
 - Optimize build path to make it shorter, more readable and allowing to fix shebang issue
 - Make the debug log human readable
 - Make default build log limit set to 4096 (4MB)

commands/register.go

@@ -125,9 +125,12 @@ func (s *RegistrationContext) askSSH(runnerConfig *common.RunnerConfig, serverle
 	if user := s.ask("ssh-user", "Please enter the SSH user (eg. root):"); user != "" {
 		runnerConfig.SSH.User = &user
 	}
-	if password := s.ask("ssh-password", "Please enter the SSH password (eg. docker.io):"); password != "" {
+	if password := s.ask("ssh-password", "Please enter the SSH password (eg. docker.io):", true); password != "" {
 		runnerConfig.SSH.Password = &password
 	}
+	if identityFile := s.ask("ssh-identity-file", "Please enter path to SSH identity file (eg. /home/user/.ssh/id_rsa):", true); identityFile != "" {
+		runnerConfig.SSH.IdentityFile = &identityFile
+	}
 }
 
 func (s *RegistrationContext) touchConfig() {
@@ -370,7 +373,12 @@ func init() {
 			cli.StringFlag{
 				Name:   "ssh-password",
 				Usage:  "SSH client password",
-				EnvVar: "SSH_USER",
+				EnvVar: "SSH_PASSWORD",
+			},
+			cli.StringFlag{
+				Name:   "ssh-identity-file",
+				Usage:  "SSH identity file",
+				EnvVar: "SSH_IDENTITY_FILE",
 			},
 		},
 	})