[etherpad-web/oscp-backend] Downgrade to nodejs 10

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit add14c2c1e0866fc5fe8cc37f4a9170e3f51ef9a
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Wed May 13 09:44:52 2020 +0200

    Downgrade to nodejs 10

 Dockerfile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/Dockerfile b/Dockerfile
index 7aa5c0c..5d3fe2a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM centos/nodejs-12-centos7
+FROM centos/nodejs-10-centos7
 ARG ETHERPAD_VERSION="1.8.3"
 
 USER root
@@ -18,7 +18,7 @@ RUN curl -L -o /tmp/etherpad.tar  https://github.com/ether/etherpad-lite/tarball
 WORKDIR /opt/etherpad
 
 # Install a few default plugins:
-SHELL ["/usr/bin/scl", "enable", "rh-nodejs12"]
+SHELL ["/usr/bin/scl", "enable", "rh-nodejs10"]
 RUN npm install ep_adminpads \
     ep_headings2 \
     ep_font_color \