Add ClickHouse CT template and installer

Introduce ClickHouse support by adding a container template (ct/clickhouse.sh), an installer script (install/clickhouse-install.sh) and app metadata (json/clickhouse.json). The installer configures ClickHouse to listen on 0.0.0.0, restarts the service, and performs OS update, networking checks, MOTD/customization and cleanup. Metadata declares default resources (2 CPU, 4GB RAM, 10GB disk), interface port 8123, documentation/website links, and a warning about the default user having no password.

ct/clickhouse.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVED/main/misc/build.func)
+# Copyright (c) 2021-2026 community-scripts ORG
+# Author: community-scripts ORG
+# License: MIT | https://github.com/community-scripts/ProxmoxVED/raw/main/LICENSE
+# Source: https://clickhouse.com
+
+APP="ClickHouse"
+var_tags="${var_tags:-database;analytics}"
+var_cpu="${var_cpu:-2}"
+var_ram="${var_ram:-4096}"
+var_disk="${var_disk:-10}"
+var_os="${var_os:-debian}"
+var_version="${var_version:-13}"
+var_unprivileged="${var_unprivileged:-1}"
+
+header_info "$APP"
+variables
+color
+catch_errors
+
+function update_script() {
+  header_info
+  check_container_storage
+  check_container_resources
+
+  if ! command -v clickhouse-server &>/dev/null; then
+    msg_error "No ${APP} Installation Found!"
+    exit
+  fi
+
+  setup_clickhouse
+  exit
+}
+
+start
+build_container
+description
+
+msg_ok "Completed Successfully!\n"
+echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}"
+echo -e "${INFO}${YW} Access it using the following URL:${CL}"
+echo -e "${TAB}${GATEWAY}${BGN}http://${IP}:8123${CL}"

install/clickhouse-install.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2021-2026 community-scripts ORG
+# Author: community-scripts ORG
+# License: MIT | https://github.com/community-scripts/ProxmoxVED/raw/main/LICENSE
+# Source: https://clickhouse.com
+
+source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
+color
+verb_ip6
+catch_errors
+setting_up_container
+network_check
+update_os
+
+setup_clickhouse
+
+msg_info "Configuring ClickHouse"
+cat <<EOF >/etc/clickhouse-server/config.d/listen.xml
+<clickhouse>
+    <listen_host>0.0.0.0</listen_host>
+</clickhouse>
+EOF
+systemctl restart clickhouse-server
+msg_ok "Configured ClickHouse"
+
+motd_ssh
+customize
+cleanup_lxc

json/clickhouse.json

@@ -0,0 +1,38 @@
+{
+  "name": "ClickHouse",
+  "slug": "clickhouse",
+  "categories": [8],
+  "date_created": "2026-04-14",
+  "type": "ct",
+  "updateable": true,
+  "privileged": false,
+  "interface_port": 8123,
+  "documentation": "https://clickhouse.com/docs/",
+  "website": "https://clickhouse.com/",
+  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/clickhouse.webp",
+  "description": "ClickHouse is an open-source, high-performance columnar database management system designed for real-time analytics and data processing using SQL queries.",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "ct/clickhouse.sh",
+      "config_path": "/etc/clickhouse-server/config.xml",
+      "resources": {
+        "cpu": 2,
+        "ram": 4096,
+        "hdd": 10,
+        "os": "Debian",
+        "version": "13"
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": "default",
+    "password": null
+  },
+  "notes": [
+    {
+      "text": "The default user 'default' has no password. Set a password for production use.",
+      "type": "warning"
+    }
+  ]
+}