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>

ct/alpine-gatus.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/build.func)
+# 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
+
+APP="Alpine-gatus"
+var_tags="${var_tags:-alpine;monitoring}"
+var_cpu="${var_cpu:-1}"
+var_ram="${var_ram:-256}"
+var_disk="${var_disk:-3}"
+var_os="${var_os:-alpine}"
+var_version="${var_version:-3.21}"
+var_unprivileged="${var_unprivileged:-1}"
+
+header_info "$APP"
+variables
+color
+catch_errors
+
+function update_script() {
+  header_info
+
+  if [[ ! -d /opt/gatus ]]; then
+    msg_error "No ${APP} Installation Found!"
+    exit 1
+  fi
+  RELEASE=$(curl -s https://api.github.com/repos/TwiN/gatus/releases/latest | grep "tag_name" | awk '{print substr($2, 3, length($2)-4) }')
+  if [ "${RELEASE}" != "$(cat /opt/gatus_version.txt)" ] || [ ! -f /opt/gatus_version.txt ]; then
+    msg_info "Updating ${APP} LXC"
+    $STD apk -U upgrade
+    $STD service gatus stop
+    mv /opt/gatus/config/config.yaml /opt
+    rm -rf /opt/gatus/*
+    temp_file=$(mktemp)
+    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
+    $STD go mod tidy
+    CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o gatus .
+    setcap CAP_NET_RAW+ep gatus
+    mv /opt/config.yaml config
+    rm -f "$temp_file"
+    echo "${RELEASE}" >/opt/gatus_version.txt
+    $STD service gatus start
+    msg_ok "Updated Successfully"
+  else
+    msg_ok "No update required. ${APP} is already at ${RELEASE}"
+  fi
+
+  exit 0
+}
+
+start
+build_container
+description
+
+msg_ok "Completed Successfully!\n"
+echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}"
+echo -e "${INFO}${YW} Access it using the following IP:${CL}"
+echo -e "${TAB}${GATEWAY}${BGN}http://${IP}:8080${CL}"