Fix garage mc not getting default secret key set correctly

entrypoint/src/cmd/entrypoint/garage.go

@@ -36,15 +36,12 @@ var subCmdGarageMC = subCmd{
 
 		s3APIAddr := hostBootstrap.ChooseGaragePeer().S3APIAddr()
 
-		if *keyID == "" || *keySecret == "" {
-
-			if *keyID == "" {
-				*keyID = hostBootstrap.Garage.GlobalBucketS3APICredentials.ID
-			}
+		if *keyID == "" {
+			*keyID = hostBootstrap.Garage.GlobalBucketS3APICredentials.ID
+		}
 
-			if *keySecret == "" {
-				*keyID = hostBootstrap.Garage.GlobalBucketS3APICredentials.Secret
-			}
+		if *keySecret == "" {
+			*keySecret = hostBootstrap.Garage.GlobalBucketS3APICredentials.Secret
 		}
 
 		args := flags.Args()
@@ -56,13 +53,15 @@ var subCmdGarageMC = subCmd{
 		args = append([]string{"mc"}, args...)
 
 		var (
+			mcHostVar = fmt.Sprintf(
+				"MC_HOST_garage=http://%s:%s@%s",
+				*keyID, *keySecret, s3APIAddr,
+			)
+
 			binPath = filepath.Join(envAppDirPath, "bin/mc")
 			cliEnv  = append(
 				os.Environ(),
-				fmt.Sprintf(
-					"MC_HOST_garage=http://%s:%s@%s",
-					*keyID, *keySecret, s3APIAddr,
-				),
+				mcHostVar,
 
 				// The garage docs say this is necessary, though nothing bad
 				// seems to happen if we leave it out *shrug*