[etherpad-web] Update to 1.8.5 and install ep_set_title_on_pad

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit 4670d4b834e0435e0c43e96a4e9097183cfbd087
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Sat Sep 12 18:29:50 2020 +0200

    Update to 1.8.5 and install ep_set_title_on_pad

 etherpad/Dockerfile | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/etherpad/Dockerfile b/etherpad/Dockerfile
index 8c2ea93..6099ac6 100644
--- a/etherpad/Dockerfile
+++ b/etherpad/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/etherpad/etherpad:1.8.3
+FROM docker.io/etherpad/etherpad:1.8.5
 
 USER root
 RUN apt-get update && apt-get install --no-install-recommends -y libreoffice-common 
@@ -10,5 +10,6 @@ RUN npm install ep_adminpads \
     ep_spellcheck \
     ep_headings2 \
     ep_font_color \
-    ep_markdown && \
+    ep_markdown \
+    ep_set_title_on_pad && \
     rm -rf ~/.npm/_cacache