check number of context pieces

Signed-off-by: Grant Linville <[email protected]>

Author: g-linville

pkg/credentials/helper.go

@@ -68,11 +68,14 @@ func (h *HelperStore) GetAll() (map[string]types.AuthConfig, error) {
 			return nil, err
 		}
 
-		possiblePortNumber := strings.Split(ctx, ":")[len(strings.Split(ctx, ":"))-1]
-		if regexp.MustCompile(`\d+$`).MatchString(possiblePortNumber) {
-			// port number confirmed
-			toolName = toolName + ":" + possiblePortNumber
-			ctx = strings.TrimSuffix(ctx, ":"+possiblePortNumber)
+		contextPieces := strings.Split(ctx, ":")
+		if len(contextPieces) > 1 {
+			possiblePortNumber := contextPieces[len(contextPieces)-1]
+			if regexp.MustCompile(`\d+$`).MatchString(possiblePortNumber) {
+				// port number confirmed
+				toolName = toolName + ":" + possiblePortNumber
+				ctx = strings.TrimSuffix(ctx, ":"+possiblePortNumber)
+			}
 		}
 
 		newCredAddresses[toolNameWithCtx(toolName, ctx)] = val