Address Review Comments.

Author: abdosi

dockers/docker-database/Dockerfile.j2

@@ -37,7 +37,7 @@ COPY ["docker-database-init.sh", "/usr/local/bin/"]
 COPY ["database_config.json.j2", "/usr/share/sonic/templates/"]
 COPY ["database_global.json.j2", "/usr/share/sonic/templates/"]
 COPY ["files/supervisor-proc-exit-listener", "/usr/bin"]
-COPY ["files/sysctl-net.conf", "/etc/sysctl.conf"]
+COPY ["files/sysctl-net.conf", "/etc/sysctl.d/"]
 COPY ["critical_processes", "/etc/supervisor"]
 
 ENTRYPOINT ["/usr/local/bin/docker-database-init.sh"]

files/build_templates/docker_image_ctl.j2

@@ -74,7 +74,7 @@ function postStartAction()
 {
 {%- if docker_container_name == "database" %}
     if [ "$DEV" ]; then
-        docker exec -i database$DEV sysctl -p -e
+        docker exec -i database$DEV sysctl --system -e
         link_namespace $DEV
     fi