software/theia: serve a public folder

like webrunner is doing

software/theia/buildout.hash.cfg

@@ -15,7 +15,7 @@
 
 [instance]
 filename = instance.cfg.in
-md5sum = 83e638fca1762c197ec5847c2deec98f
+md5sum = 202f809fd759e9a507db7c7d33caae48
 
 [yarn.lock]
 filename = yarn.lock

software/theia/instance.cfg.in

@@ -50,8 +50,10 @@ template = inline:
     tls {
       alpn http/1.1
     }
+    root $${directory:frontend-static}
+    browse
     proxy / $${theia-instance:base-url} {
-    #  transparent
+      except public
     }
     proxy /services $${theia-instance:base-url} {
       websocket
@@ -190,3 +192,5 @@ pidfiles = $${:var}/run
 services = $${:etc}/service
 project = $${:srv}/project
 slapos = $${:srv}/slapos
+frontend-static = $${:srv}/frontend-static
+frontend-static-public = $${:frontend-static}/public

software/theia/test/test.py

@@ -31,7 +31,7 @@ import textwrap
 import logging
 import tempfile
 import time
-from six.moves.urllib.parse import urlparse
+from six.moves.urllib.parse import urlparse, urljoin
 
 import pexpect
 import requests
@@ -54,16 +54,27 @@ class TestTheia(SlapOSInstanceTestCase):
 
     # with login/password, this is allowed
     parsed_url = urlparse(self.connection_parameters['url'])
-    resp = requests.get(
-        parsed_url._replace(
+    authenticated_url = parsed_url._replace(
         netloc='{}:{}@[{}]:{}'.format(
             self.connection_parameters['username'],
             self.connection_parameters['password'],
             parsed_url.hostname,
-                parsed_url.port)).geturl(),
-        verify=False)
+            parsed_url.port,
+        )).geturl()
+    resp = requests.get(authenticated_url, verify=False)
     self.assertEqual(requests.codes.ok, resp.status_code)
 
+    # there's a public folder to serve file
+    with open('{}/srv/frontend-static/public/test_file'.format(
+        self.computer_partition_root_path), 'w') as f:
+      f.write("hello")
+    resp = requests.get(urljoin(authenticated_url, '/public/'), verify=False)
+    self.assertIn('test_file', resp.text)
+    resp = requests.get(
+        urljoin(authenticated_url, '/public/test_file'), verify=False)
+    self.assertEqual('hello', resp.text)
+
+
   def test_theia_slapos(self):
     # Make sure we can use the shell and the integrated slapos command
     process = pexpect.spawnu(