Fix cases where /opt/techs doesn't exist

containers/types.go

@@ -2,6 +2,7 @@ package containers
 
 import (
 	"errors"
+	"fmt"
 	"log"
 	"path"
 	"strings"
@@ -340,7 +341,18 @@ func (c *Container) GetTechs() (apps.AppTechs, error) {
 
 	driver := c.getDriver()
 
-	stdouterr, err := driver.Exec(c.App.Name, []string{"ls", "/opt/techs"}, "", []string{}, true)
+	stdouterr, err := driver.Exec(c.App.Name, []string{"ls", "/opt"}, "", []string{}, true)
+	if err != nil {
+		// in case there is an error just return empty response
+		return techs, nil
+	}
+
+	// Check if /opt/techs exists
+	if !strings.Contains(string(*stdouterr), "techs") {
+		return techs, nil
+	}
+
+	stdouterr, err = driver.Exec(c.App.Name, []string{"ls", "/opt/techs"}, "", []string{}, true)
 	if err != nil {
 		// in case there is an error just return empty response
 		return techs, nil
@@ -360,7 +372,7 @@ func (c *Container) GetTechs() (apps.AppTechs, error) {
 				Version: techParts[1],
 			})
 		} else {
-			return techs, errors.New("one of the tech has wrong number of parts")
+			return techs, fmt.Errorf("one of the tech has wrong number of parts (%s)", techRaw)
 		}
 	}