feat: do not check for context existence if a custom context file is set (#1751)

Author: lburgazzoli

pkg/core/servicecontext/file.go

@@ -97,12 +97,6 @@ func (c *File) Remove() error {
 func (c *File) Location() (path string, err error) {
 
 	if rhoasContext := os.Getenv(ContextEnvName); rhoasContext != "" {
-
-		_, err := os.Stat(rhoasContext)
-		if os.IsNotExist(err) {
-			return "", fmt.Errorf("Custom file path '%s' provided doesn't exist", rhoasContext)
-		}
-
 		path = rhoasContext
 	} else {
 		rhoasCtxDir, err := DefaultDir()