diff --git a/indexer/deb/debian/postinst b/indexer/deb/debian/postinst
index 14822d5cef..4d099559aa 100644
--- a/indexer/deb/debian/postinst
+++ b/indexer/deb/debian/postinst
@@ -66,8 +66,13 @@ if [ -z "$2" ]; then
   echo "-Djava.security.policy=file:///usr/share/wazuh-indexer/plugins/opendistro-performance-analyzer/pa_config/es_security.policy" >> /etc/wazuh-indexer/jvm.options
 
   # ---------------------------------------------------------------------------
-	sysctl -w vm.max_map_count=262144 > /dev/null 2>&1 
-	ulimit -Hn 65535 > /dev/null 2>&1 
+
+  echo "${USER} hard nproc 4096" >> /etc/security/limits.conf
+  echo "${USER} soft nproc 4096" >> /etc/security/limits.conf
+  echo "${USER} hard nofile 65535" >> /etc/security/limits.conf
+  echo "${USER} soft nofile 65535" >> /etc/security/limits.conf
+
+  sysctl -w vm.max_map_count=262144 > /dev/null 2>&1 
 
   if command -v sudo > /dev/null 2>&1; then
       sudo -u ${USER} CLK_TK=`getconf CLK_TCK` OPENSEARCH_PATH_CONF=${CONFIG_DIR} ${INSTALLATION_DIR}/bin/opensearch --quiet > /dev/null 2>&1 &
diff --git a/indexer/deb/debian/rules b/indexer/deb/debian/rules
index 6326c077b4..d06a341dc8 100644
--- a/indexer/deb/debian/rules
+++ b/indexer/deb/debian/rules
@@ -127,7 +127,7 @@ override_dh_install:
 # -----------------------------------------------------------------------------
 
 override_dh_strip:
-	dh_strip --no-automatic-dbgsym
+	dh_strip
 
 # -----------------------------------------------------------------------------
 
diff --git a/indexer/deb/docker/amd64/Dockerfile b/indexer/deb/docker/amd64/Dockerfile
index b7149bdc8b..6edf9beae2 100644
--- a/indexer/deb/docker/amd64/Dockerfile
+++ b/indexer/deb/docker/amd64/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM debian:8
 
 ENV DEBIAN_FRONTEND noninteractive