diff --git a/Dockerfile b/Dockerfile
index a82dc40..8d8b2c2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -69,20 +69,21 @@ COPY run-document-server.sh /app/ds/run-document-server.sh
 
 EXPOSE 80 443
 
-ARG REPO_URL="deb http://download.onlyoffice.com/repo/debian squeeze main"
 ARG COMPANY_NAME=onlyoffice
 ARG PRODUCT_NAME=documentserver
+ARG PACKAGE_URL="http://download.onlyoffice.com/install/documentserver/linux/${COMPANY_NAME}-${PRODUCT_NAME}_amd64.deb"
 
 ENV COMPANY_NAME=$COMPANY_NAME \
     PRODUCT_NAME=$PRODUCT_NAME
 
-RUN echo "$REPO_URL" | tee /etc/apt/sources.list.d/ds.list && \
+RUN wget -q -P /tmp "$PACKAGE_URL" && \
     apt-get -y update && \
     service postgresql start && \
-    apt-get -yq install $COMPANY_NAME-$PRODUCT_NAME && \
+    apt-get -yq install /tmp/$(basename "$PACKAGE_URL") && \
     service postgresql stop && \
     service supervisor stop && \
     chmod 755 /app/ds/*.sh && \
+    rm -f /tmp/$(basename "$PACKAGE_URL") && \
     rm -rf /var/log/$COMPANY_NAME && \
     rm -rf /var/lib/apt/lists/*
 
diff --git a/Makefile b/Makefile
index 3021df3..c371fc7 100644
--- a/Makefile
+++ b/Makefile
@@ -4,14 +4,16 @@ PRODUCT_NAME ?= DocumentServer
 PRODUCT_VERSION ?= 0.0.0
 BUILD_NUMBER ?= 0
 ONLYOFFICE_VALUE ?= onlyoffice
+S3_BUCKET ?= repo-doc-onlyoffice-com
+RELEASE_BRANCH ?= unstable
 
 COMPANY_NAME_LOW = $(shell echo $(COMPANY_NAME) | tr A-Z a-z)
 PRODUCT_NAME_LOW = $(shell echo $(PRODUCT_NAME) | tr A-Z a-z)
 COMPANY_NAME_LOW_ESCAPED = $(subst -,,$(COMPANY_NAME_LOW))
 
+PACKAGE_NAME := $(COMPANY_NAME_LOW)-$(PRODUCT_NAME_LOW)
 PACKAGE_VERSION := $(PRODUCT_VERSION)-$(BUILD_NUMBER)
-
-REPO_URL := "deb [trusted=yes] http://repo-doc-onlyoffice-com.s3.amazonaws.com/ubuntu/trusty/$(COMPANY_NAME_LOW)-$(PRODUCT_NAME_LOW)/$(GIT_BRANCH)/$(PACKAGE_VERSION)/ repo/"
+PACKAGE_URL := http://$(S3_BUCKET).s3.amazonaws.com/$(COMPANY_NAME_LOW)/$(RELEASE_BRANCH)/ubuntu/$(PACKAGE_NAME)_$(PACKAGE_VERSION)_amd64.deb
 
 UPDATE_LATEST := false
 
@@ -35,12 +37,14 @@ DOCKER_TARGETS := $(foreach TAG,$(DOCKER_TAGS),$(DOCKER_REPO)$(COLON)$(TAG))
 
 DOCKER_ARCH := $(COMPANY_NAME_LOW)-$(PRODUCT_NAME_LOW)_$(PACKAGE_VERSION).tar.gz
 
+DOCKER_ARCH_URI := $(COMPANY_NAME_LOW)/$(RELEASE_BRANCH)/docker/$(notdir $(DOCKER_ARCH))
+
 .PHONY: all clean clean-docker deploy docker publish
 
 $(DOCKER_TARGETS): $(DEB_REPO_DATA)
 	docker pull ubuntu:20.04
 	docker build \
-		--build-arg REPO_URL=$(REPO_URL) \
+		--build-arg PACKAGE_URL=$(PACKAGE_URL) \
 		--build-arg COMPANY_NAME=$(COMPANY_NAME_LOW) \
 		--build-arg PRODUCT_NAME=$(PRODUCT_NAME_LOW) \
 		--build-arg ONLYOFFICE_VALUE=$(ONLYOFFICE_VALUE) \
@@ -67,7 +71,5 @@ deploy: $(DOCKER_TARGETS)
 		done;)
 
 publish: $(DOCKER_ARCH)
-	aws s3 cp \
-		$(DOCKER_ARCH) \
-		s3://repo-doc-onlyoffice-com.s3.amazonaws.com/docker/amd64/ \
-		--acl public-read
+	aws s3 cp --no-progress --acl public-read \
+		$(DOCKER_ARCH) s3://$(S3_BUCKET)/$(DOCKER_ARCH_URI)
diff --git a/README.md b/README.md
index 44ca51b..a56cfc4 100644
--- a/README.md
+++ b/README.md
@@ -178,7 +178,7 @@ Below is the complete list of parameters that can be set using environment varia
 - **DB_TYPE**: The database type. Supported values are `postgres`, `mariadb` or `mysql`. Defaults to `postgres`.
 - **DB_HOST**: The IP address or the name of the host where the database server is running.
 - **DB_PORT**: The database server port number.
-- **DB_NAME**: The name of a database to be created on the image startup.
+- **DB_NAME**: The name of a database to use. Should be existing on container startup.
 - **DB_USER**: The new user name with superuser permissions for the database account.
 - **DB_PWD**: The password set for the database account.
 - **AMQP_URI**: The [AMQP URI](https://www.rabbitmq.com/uri-spec.html "RabbitMQ URI Specification") to connect to message broker server.
diff --git a/run-document-server.sh b/run-document-server.sh
index 626b72a..2457304 100755
--- a/run-document-server.sh
+++ b/run-document-server.sh
@@ -11,16 +11,32 @@ shopt -s globstar
 
 APP_DIR="/var/www/${COMPANY_NAME}/documentserver"
 DATA_DIR="/var/www/${COMPANY_NAME}/Data"
+PRIVATE_DATA_DIR="${DATA_DIR}/.private"
+DS_RELEASE_DATE="${PRIVATE_DATA_DIR}/ds_release_date"
 LOG_DIR="/var/log/${COMPANY_NAME}"
 DS_LOG_DIR="${LOG_DIR}/documentserver"
 LIB_DIR="/var/lib/${COMPANY_NAME}"
 DS_LIB_DIR="${LIB_DIR}/documentserver"
 CONF_DIR="/etc/${COMPANY_NAME}/documentserver"
+IS_UPGRADE="false"
 
 ONLYOFFICE_DATA_CONTAINER=${ONLYOFFICE_DATA_CONTAINER:-false}
 ONLYOFFICE_DATA_CONTAINER_HOST=${ONLYOFFICE_DATA_CONTAINER_HOST:-localhost}
 ONLYOFFICE_DATA_CONTAINER_PORT=80
 
+RELEASE_DATE="$(stat -c="%y" ${APP_DIR}/server/DocService/docservice | sed -r 's/=([0-9]+)-([0-9]+)-([0-9]+) ([0-9:.+ ]+)/\1-\2-\3/')";
+if [ -f ${DS_RELEASE_DATE} ]; then
+  PREV_RELEASE_DATE=$(head -n 1 ${DS_RELEASE_DATE})
+else
+  PREV_RELEASE_DATE="0"
+fi
+
+if [ "${RELEASE_DATE}" != "${PREV_RELEASE_DATE}" ]; then
+  if [ ${ONLYOFFICE_DATA_CONTAINER} != "true" ]; then
+    IS_UPGRADE="true";
+  fi
+fi
+
 SSL_CERTIFICATES_DIR="${DATA_DIR}/certs"
 if [[ -z $SSL_CERTIFICATE_PATH ]] && [[ -f ${SSL_CERTIFICATES_DIR}/onlyoffice.crt ]]; then
   SSL_CERTIFICATE_PATH=${SSL_CERTIFICATES_DIR}/onlyoffice.crt
@@ -103,6 +119,7 @@ read_setting(){
   METRICS_PREFIX="${METRICS_PREFIX:-.ds}"
 
   DB_HOST=${DB_HOST:-${POSTGRESQL_SERVER_HOST:-$(${JSON} services.CoAuthoring.sql.dbHost)}}
+  DB_TYPE=${DB_TYPE:-$(${JSON} services.CoAuthoring.sql.type)}
   case $DB_TYPE in
     "postgres")
       DB_PORT=${DB_PORT:-"5432"}
@@ -121,7 +138,6 @@ read_setting(){
   DB_NAME=${DB_NAME:-${POSTGRESQL_SERVER_DB_NAME:-$(${JSON} services.CoAuthoring.sql.dbName)}}
   DB_USER=${DB_USER:-${POSTGRESQL_SERVER_USER:-$(${JSON} services.CoAuthoring.sql.dbUser)}}
   DB_PWD=${DB_PWD:-${POSTGRESQL_SERVER_PASS:-$(${JSON} services.CoAuthoring.sql.dbPass)}}
-  DB_TYPE=${DB_TYPE:-$(${JSON} services.CoAuthoring.sql.type)}
 
   RABBITMQ_SERVER_URL=${RABBITMQ_SERVER_URL:-$(${JSON} rabbitmq.url)}
   AMQP_URI=${AMQP_URI:-${AMQP_SERVER_URL:-${RABBITMQ_SERVER_URL}}}
@@ -327,6 +343,36 @@ create_db_tbl() {
   esac
 }
 
+upgrade_db_tbl() {
+  case $DB_TYPE in
+    "postgres")
+      upgrade_postgresql_tbl
+    ;;
+    "mariadb"|"mysql")
+      upgrade_mysql_tbl
+    ;;
+  esac
+}
+
+upgrade_postgresql_tbl() {
+  if [ -n "$DB_PWD" ]; then
+    export PGPASSWORD=$DB_PWD
+  fi
+
+  PSQL="psql -q -h$DB_HOST -p$DB_PORT -d$DB_NAME -U$DB_USER -w"
+
+  $PSQL -f "$APP_DIR/server/schema/postgresql/removetbl.sql"
+  $PSQL -f "$APP_DIR/server/schema/postgresql/createdb.sql"
+}
+
+upgrade_mysql_tbl() {
+  CONNECTION_PARAMS="-h$DB_HOST -P$DB_PORT -u$DB_USER -p$DB_PWD -w"
+  MYSQL="mysql -q $CONNECTION_PARAMS"
+
+  $MYSQL $DB_NAME < "$APP_DIR/server/schema/mysql/removetbl.sql" >/dev/null 2>&1
+  $MYSQL $DB_NAME < "$APP_DIR/server/schema/mysql/createdb.sql" >/dev/null 2>&1
+}
+
 create_postgresql_tbl() {
   if [ -n "$DB_PWD" ]; then
     export PGPASSWORD=$DB_PWD
@@ -423,6 +469,11 @@ update_logrotate_settings(){
   sed 's|\(^su\b\).*|\1 root root|' -i /etc/logrotate.conf
 }
 
+update_release_date(){
+  mkdir -p ${PRIVATE_DATA_DIR}
+  echo ${RELEASE_DATE} > ${DS_RELEASE_DATE}
+}
+
 # create base folders
 for i in converter docservice spellchecker metrics; do
   mkdir -p "${DS_LOG_DIR}/$i"
@@ -527,6 +578,11 @@ if [ ${ONLYOFFICE_DATA_CONTAINER} != "true" ]; then
     waiting_for_redis
   fi
 
+  if [ "${IS_UPGRADE}" = "true" ]; then
+    upgrade_db_tbl
+    update_release_date
+  fi
+
   update_nginx_settings
 
   update_supervisor_settings