alpine-gatus (#4442)

* 'Add new script'

* Update ct/alpine-gatus.sh

---------

Co-authored-by: push-app-to-main[bot] <203845782+push-app-to-main[bot]@users.noreply.github.com>
Co-authored-by: Slaviša Arežina <58952836+tremor021@users.noreply.github.com>

install/alpine-gatus-install.sh

@@ -0,0 +1,70 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2021-2025 community-scripts ORG
+# Author: Slaviša Arežina (tremor021)
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+# Source: https://github.com/TwiN/gatus
+
+source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
+color
+verb_ip6
+catch_errors
+setting_up_container
+network_check
+update_os
+
+msg_info "Installing dependencies"
+$STD apk add --no-cache \
+  ca-certificates \
+  libcap-setcap
+$STD apk add --no-cache --repository=https://dl-cdn.alpinelinux.org/alpine/edge/community go
+msg_ok "Installed dependencies"
+
+RELEASE=$(curl -s https://api.github.com/repos/TwiN/gatus/releases/latest | grep "tag_name" | awk '{print substr($2, 3, length($2)-4) }')
+msg_info "Installing gatus v${RELEASE}"
+temp_file=$(mktemp)
+mkdir -p /opt/gatus
+curl -fsSL "https://github.com/TwiN/gatus/archive/refs/tags/v${RELEASE}.tar.gz" -o "$temp_file"
+tar zxf "$temp_file" --strip-components=1 -C /opt/gatus
+cd /opt/gatus
+$STD go mod tidy
+CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o gatus .
+setcap CAP_NET_RAW+ep gatus
+mv config.yaml config
+echo "${RELEASE}" >/opt/gatus_version.txt
+msg_ok "Installed gatus v${RELEASE}"
+
+msg_info "Enabling gatus Service"
+cat <<EOF >/etc/init.d/gatus
+#!/sbin/openrc-run
+description="gatus Service"
+directory="/opt/gatus"
+command="/opt/gatus/gatus"
+command_args=""
+command_background="true"
+command_user="root"
+pidfile="/var/run/gatus.pid"
+
+export GATUS_CONFIG_PATH=""
+export GATUS_LOG_LEVEL="INFO"
+export PORT="8080"
+
+depend() {
+    use net
+}
+EOF
+chmod +x /etc/init.d/gatus
+$STD rc-update add gatus default
+msg_ok "Enabled gatus Service"
+
+msg_info "Starting gatus"
+$STD service gatus start
+msg_ok "Started gatus"
+
+motd_ssh
+customize
+
+msg_info "Cleaning up"
+rm -f "$temp_file"
+$STD apk cache clean
+msg_ok "Cleaned"