update base image version to 16.04

Dockerfile

-FROM ubuntu:14.04
+FROM ubuntu:16.04
 LABEL maintainer Ascensio System SIA <support@onlyoffice.com>
 
 ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive
 
 RUN echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     apt-get -y update && \
-    apt-get --force-yes -yq install wget apt-transport-https curl && \
+    apt-get -yq install wget apt-transport-https curl locales && \
     apt-key adv --keyserver keyserver.ubuntu.com --recv-keys CB2DE8E5 && \
-    echo "deb http://archive.ubuntu.com/ubuntu precise main universe multiverse" >> /etc/apt/sources.list && \
     locale-gen en_US.UTF-8 && \
     curl -sL https://deb.nodesource.com/setup_6.x | bash - && \
     apt-get -y update && \
     echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | debconf-set-selections && \
-    apt-get --force-yes -yq install adduser \
+    apt-get -yq install \
+        adduser \
         bomstrip \
         fonts-crosextra-carlito \
         fonts-dejavu \
@@ -34,6 +34,8 @@ RUN echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
         libxss1 \
         libxtst6 \
         nano \
+        net-tools \
+        netcat \
         nginx-extras \
         nodejs \
         postgresql \
@@ -42,6 +44,7 @@ RUN echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
         rabbitmq-server \
         redis-server \
         software-properties-common \
+        sudo \
         supervisor \
         ttf-mscorefonts-installer \
         xvfb \
@@ -68,7 +71,7 @@ ARG PRODUCT_NAME=onlyoffice-documentserver
 RUN echo "$REPO_URL" | tee /etc/apt/sources.list.d/onlyoffice.list && \
     apt-get -y update && \
     service postgresql start && \
-    apt-get --force-yes -yq install $PRODUCT_NAME && \
+    apt-get --allow-unauthenticated -yq install $PRODUCT_NAME && \
     service postgresql stop && \
     service supervisor stop && \
     chmod 755 /app/onlyoffice/*.sh && \

run-document-server.sh

@@ -45,7 +45,7 @@ JSON_EXAMPLE="json -q -f ${ONLYOFFICE_EXAMPLE_CONFIG}"
 
 LOCAL_SERVICES=()
 
-PG_VERSION=9.3
+PG_VERSION=9.5
 PG_NAME=main
 PGDATA=/var/lib/postgresql/${PG_VERSION}/${PG_NAME}
 PG_NEW_CLUSTER=false
@@ -214,6 +214,9 @@ update_nginx_settings(){
     sed 's,{{SSL_CERTIFICATE_PATH}},'"${SSL_CERTIFICATE_PATH}"',' -i ${NGINX_ONLYOFFICE_CONF}
     sed 's,{{SSL_KEY_PATH}},'"${SSL_KEY_PATH}"',' -i ${NGINX_ONLYOFFICE_CONF}
 
+    # turn on http2
+    sed 's,\(443 ssl\),\1 http2,' -i ${NGINX_ONLYOFFICE_CONF}
+
     # if dhparam path is valid, add to the config, otherwise remove the option
     if [ -r "${SSL_DHPARAM_PATH}" ]; then
       sed 's,\(\#* *\)\?\(ssl_dhparam \).*\(;\)$,'"\2${SSL_DHPARAM_PATH}\3"',' -i ${NGINX_ONLYOFFICE_CONF}