correct container to correctly handle SIGTERM signal and allow faster stop

Dockerfile

@@ -11,4 +11,4 @@ COPY ./docker-entrypoint.sh /docker-entrypoint.sh
 COPY ./nginx/default.conf.tmpl /etc/nginx/conf.d/default.conf.tmpl
 COPY ./pad.js /app/src/static/custom/pad.js
 EXPOSE 80
-CMD [ "/docker-entrypoint.sh" ]
+ENTRYPOINT [ "/docker-entrypoint.sh" ]

docker-entrypoint.sh

@@ -48,5 +48,4 @@ done
 set -e
 nginx
 export NODE_ENV=production
-node node_modules/ep_etherpad-lite/node/server.js
-
+exec node node_modules/ep_etherpad-lite/node/server.js