cli: fix build_component_url func.

reana_cluster/utils.py

@@ -98,23 +98,27 @@ def build_component_url(host, ports, insecure=False):
     :returns: Full URL to the component.
     :rtype: str
     """
-    def _discover_https_port(ports):
-        https_ports = [443, 30443]
-        https_port_index = None
-        for https_port in https_ports:
+    def _discover_port(ports, target_ports):
+        target_port_index = None
+        for target in target_ports:
             try:
-                https_port_index = ports.index(https_port)
+                target_port_index = ports.index(target)
             except ValueError:
                 continue
-        return ports[https_port_index] if https_port_index else None
+        return ports[target_port_index] if target_port_index else None
+
+    https_port = _discover_port(ports, [443, 30443])
+    http_port = _discover_port(ports, [80, 30080])
 
-    https_port = _discover_https_port(ports)
     if https_port and not insecure:
         scheme = 'https'
         port = https_port
-    else:
+    elif http_port:
         scheme = 'http'
-        port = ports[0]
+        port = http_port
+    else:
+        logging.info('There are no ports available')
+        raise ValueError()
 
     return '{scheme}://{host}:{port}'.format(
         scheme=scheme, host=host, port=port)