MusicSeerr (#14746)

* Add musicseerr (ct)

* musicseerr-install.sh

---------

Co-authored-by: push-app-to-main[bot] <203845782+push-app-to-main[bot]@users.noreply.github.com>
Co-authored-by: Michel Roegl-Brunner <73236783+michelroegl-brunner@users.noreply.github.com>

install/musicseerr-install.sh

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2021-2026 community-scripts ORG
+# Author: michelroegl-brunner
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+# Source: https://musicseerr.com/ | Github: https://github.com/HabiRabbu/Musicseerr
+
+source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
+color
+verb_ip6
+catch_errors
+setting_up_container
+network_check
+update_os
+
+PYTHON_VERSION="3.13" setup_uv
+fetch_and_deploy_gh_release "musicseerr" "HabiRabbu/Musicseerr" "tarball"
+NODE_VERSION="22" NODE_MODULE="pnpm@10.33.0" setup_nodejs
+
+msg_info "Building Frontend"
+cd /opt/musicseerr/frontend
+export NODE_OPTIONS="--max-old-space-size=3072"
+$STD pnpm install --frozen-lockfile
+$STD pnpm run build
+msg_ok "Built Frontend"
+
+msg_info "Setting up Application"
+mkdir -p /opt/musicseerr/backend/config /opt/musicseerr/backend/cache
+$STD uv venv /opt/musicseerr/venv
+$STD uv pip install -r /opt/musicseerr/backend/requirements.txt --python=/opt/musicseerr/venv/bin/python
+rm -rf /opt/musicseerr/backend/static
+cp -r /opt/musicseerr/frontend/build /opt/musicseerr/backend/static
+msg_ok "Set up Application"
+
+msg_info "Creating Service"
+cat <<EOF >/etc/systemd/system/musicseerr.service
+[Unit]
+Description=MusicSeerr Service
+After=network.target
+
+[Service]
+Type=simple
+User=root
+WorkingDirectory=/opt/musicseerr/backend
+Environment=ROOT_APP_DIR=/opt/musicseerr/backend
+Environment=PORT=8688
+ExecStart=/opt/musicseerr/venv/bin/uvicorn main:app --host 0.0.0.0 --port 8688 --loop uvloop --http httptools --workers 1
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+EOF
+systemctl enable -q --now musicseerr
+msg_ok "Created Service"
+
+motd_ssh
+customize
+cleanup_lxc