Steps to reproduce:

1. Create a host
2. Create an item (zabbix trapper) and a trigger
3. Alerts->Scripts->Create Script
   Scope: action operation
   Type: Script
   Execute on: Zabbix Agent
   Commands: echo $(date) >> /tmp/out.expl
4. Create an action to respond to the trigger event
   Operation: Choose the created script
   Steps: 1-0
   Step duration: 1m
   Target list: Current host checked
5. Trigger the trigger

Result:

The script fails with a time out message, sometimes succeeding

Expected:
Always succeed

One of the implementations configuration

Agent2
podman run --name zabbix-agent2 -e ZBX_SERVER_HOST="127.0.0.1,localhost" -e ZBX_HOSTNAME="Host A" -e ZBX_ALLOWKEY="system.run[*]" -e ZBX_REFRESHACTIVECHECKS=2 --restart=always --pod=zabbix72 -d docker.io/zabbix/zabbix-agent2:alpine-7.2-latest

MySQL Server
podman run --name mysql-server -t -e MYSQL_DATABASE="zabbix" -e MYSQL_USER="zabbix" -e MYSQL_PASSWORD="zabbix_pwd" -e MYSQL_ROOT_PASSWORD="root_pwd" -v ./mysql/:/var/lib/mysql/:Z --restart=always --pod=zabbix72 -d docker.io/library/mysql:8.0 --character-set-server=utf8 --collation-server=utf8_bin --default-authentication-plugin=mysql_native_password

Zabbix Server
podman run --name zabbix-server-mysql -t -e ZBX_TIMEOUT=30 -e DB_SERVER_HOST="127.0.0.1" -e MYSQL_DATABASE="zabbix" -e MYSQL_USER="zabbix" -e MYSQL_PASSWORD="zabbix_pwd" -e MYSQL_ROOT_PASSWORD="root_pwd" --restart=always --pod=zabbix72 -d docker.io/zabbix/zabbix-server-mysql:alpine-7.2-latest

Frontend
podman run --name zabbix-web-mysql -t -e ZBX_SERVER_HOST="127.0.0.1" -e DB_SERVER_HOST="127.0.0.1" -e MYSQL_DATABASE="zabbix" -e MYSQL_USER="zabbix" -e MYSQL_PASSWORD="zabbix_pwd" -e MYSQL_ROOT_PASSWORD="root_pwd" --restart=always --pod=zabbix72 -d docker.io/zabbix/zabbix-web-nginx-mysql:alpine-7.2-latest

Also tested in VMs