[etherpad-web/oscp-backend] Use ep_adminpads2 instead, as it is actually maintained

[Andrea Veri <averi src gnome org>]

commit b23af1b024d90562c7811e4568d62960c095c43d
Author: Andrea Veri <averi redhat com>
Date:   Mon Dec 13 17:50:16 2021 +0100

    Use ep_adminpads2 instead, as it is actually maintained

 Dockerfile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/Dockerfile b/Dockerfile
index 19d1599..e89b353 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -24,7 +24,8 @@ ADD entrypoint.sh /entrypoint.sh
 USER etherpad
 WORKDIR /opt/etherpad
 RUN bin/installDeps.sh && rm settings.json && \
-    npm install ep_align \
+    npm install ep_adminpads2 \ 
+      ep_align \
       ep_spellcheck \
       ep_headings2 \
       ep_font_color \