docker: front end cannot detect backend: Server is running: No

[grayaii]

Hi,
I am trying to get zabbix to work with docker.

I have a simple script that starts the frontend and the backend, but when I log into the frontend, it says:
Zabbix server is running No

For some reason, the frontend cannot find the backend, even though I put the "--link" option in docker:

#!/bin/bash

ZABBIX_TAG=ubuntu-5.2.0
SERVER_NAME_BACKEND=zabbix-backend
SERVER_NAME_FRONTEND=zabbix-frontend

docker run --name ${SERVER_NAME_BACKEND} \
-p 10051:10051 \
-p 10050:10050 \
-e DB_SERVER_HOST=zabbix.mycompany.com \
-e POSTGRES_DB=zabbix \
-e POSTGRES_USER=zabbix \
-e POSTGRES_PASSWORD="xxx" \
-d zabbix/zabbix-server-pgsql:${ZABBIX_TAG}

docker run --name ${SERVER_NAME_FRONTEND} \
--link ${SERVER_NAME_BACKEND}:${SERVER_NAME_BACKEND} \
-p 8080:8080 \
-e DB_SERVER_HOST=zabbix.mycompany.com \
-e POSTGRES_DB=zabbix \
-e POSTGRES_USER=zabbix \
-e POSTGRES_PASSWORD="xxx" \
-e PHP_TZ="America/Los_Angeles" \
-d zabbix/zabbix-web-nginx-pgsql:${ZABBIX_TAG}

When I do a docker ps, i see the frontend/backend running happily:

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2152fd82849f zabbix/zabbix-web-nginx-pgsql:ubuntu-5.2.0 "docker-entrypoint.sh" 12 hours ago Up 12 hours 0.0.0.0:8080->8080/tcp, 8443/tcp zabbix-frontend
061a32b9c4e6 zabbix/zabbix-server-pgsql:ubuntu-5.2.0 "/usr/bin/tini -- /u…" 12 hours ago Up 12 hours 0.0.0.0:10050-10051->10050-10051/tcp zabbix-backend

I don't see anything obvious in the logs too, but if you want I can post them here too.