feat: Ubuntu focal 20.04

rootfs/usr/local/bin/chromium-browser-sound.sh

@@ -5,4 +5,4 @@ if [ -z "$ALSADEV" ]; then
     exit 1
 fi
 
-exec /usr/bin/chromium-browser --no-sandbox --alsa-output-device="$ALSADEV" "$@"
+exec /usr/bin/google-chrome --no-sandbox --alsa-output-device="$ALSADEV" "$@"

rootfs/usr/local/lib/web/backend/run.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 from __future__ import (
     absolute_import, division, print_function, with_statement
 )

rootfs/usr/local/lib/web/backend/vnc/app.py

@@ -151,7 +151,7 @@ def liveflv():
             cmd,
             stdout=gsp.PIPE,
             stderr=gsp.PIPE,
-            env={k: str(v) for k, v in xenvs.iteritems()},
+            env={k: str(v) for k, v in xenvs.items()},
         )
 
         def readerr(f):

rootfs/usr/local/lib/web/backend/vnc/state.py

@@ -31,7 +31,7 @@ class State(object):
         output = gsp.check_output([
             'supervisorctl', '-c', '/etc/supervisor/supervisord.conf',
             'status'
-        ])
+        ], encoding='UTF-8')
         for line in output.strip().split('\n'):
             if not line.startswith('web') and line.find('RUNNING') < 0:
                 health = False