diff --git a/README.md b/README.md
index ee52a93..c0a4032 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,23 @@ curl -sSL https://git.lohmar.co.uk/cclohmar/NextNVR/raw/branch/main/setup.sh | b
 
 That's it. The script installs everything needed and starts NextNVR automatically.
 
-Once done, open **[http://192.168.1.10:8080](http://192.168.1.10:8080)** in your browser.
+Once done, open the web interface in your browser (the script prints the URL).
+
+---
+
+## Supported Systems
+
+| Distro | Package Manager | Status |
+|---|---|---|
+| Debian 12+ / Ubuntu 22.04+ | `apt` | ✅ Tested |
+| Fedora 40+ / RHEL 9+ | `dnf` / `yum` | ✅ |
+| Arch Linux | `pacman` | ✅ |
+| Alpine Linux | `apk` | ✅ |
+| Other (systemd) | auto-detect | ✅ |
+| Other (no systemd) | fallback to `nohup` | ✅ |
+
+- **ARM64** (Raspberry Pi, etc.) — auto-detected
+- **Root or sudo** — handles both
 
 ---
 
@@ -35,10 +51,10 @@ Once done, open **[http://192.168.1.10:8080](http://192.168.1.10:8080)** in your
 
 | What | Detail |
 |---|---|
-| Address | `http://192.168.1.10:8080` |
+| Web interface | `http://<server-ip>:8080` |
 | Config file | `/opt/nextnvr/config.yaml` |
 | Recordings | `/mnt/recordings/` |
-| Logs | `sudo journalctl -u nextnvr -f` |
+| Logs | `sudo journalctl -u nextnvr -f` (systemd) or `tail -f /opt/nextnvr/nextnvr.log` (nohup) |
 
 ### Useful Commands
 
@@ -71,7 +87,7 @@ IP Cameras                    NextNVR                        Your Browser
 
 ## Adding or Changing Cameras
 
-1. Open **http://192.168.1.10:8080** 
+1. Open the web interface in your browser
 2. Click the **Settings** tab
 3. Click **🔍 Scan Network** to find your cameras
 4. Give each camera a name and description
diff --git a/setup.sh b/setup.sh
index a366dcf..6846280 100755
--- a/setup.sh
+++ b/setup.sh
@@ -1,20 +1,25 @@
 #!/bin/bash
-# NextNVR — One-Line Deployment Script
+# NextNVR — Portable One-Line Deployment Script
 # Usage: curl -sSL https://git.lohmar.co.uk/cclohmar/NextNVR/raw/branch/main/setup.sh | bash
+#
+# Supports: Debian, Ubuntu, Fedora, RHEL, Rocky, Alma, Arch, Alpine
+# Requires: curl, sudo, systemd (or falls back to nohup for non-systemd)
 set -e
 
 GIT_URL="https://git.lohmar.co.uk/cclohmar/NextNVR.git"
 DEPLOY_DIR="/opt/nextnvr"
 SERVICE_NAME="nextnvr"
 GO_VERSION="1.24.5"
-GO_OS="linux"
 GO_ARCH="amd64"
 
+# Detect ARM: use arm64 if running on aarch64.
+if [ "$(uname -m)" = "aarch64" ]; then GO_ARCH="arm64"; fi
+
 RED='\033[0;31m'
 GREEN='\033[0;32m'
 YELLOW='\033[1;33m'
 CYAN='\033[0;36m'
-NC='\033[0m' # No Color
+NC='\033[0m'
 
 log()  { echo -e "${GREEN}[NextNVR]${NC} $1"; }
 warn() { echo -e "${YELLOW}[NextNVR]${NC} $1"; }
@@ -23,79 +28,132 @@ info() { echo -e "${CYAN}[NextNVR]${NC} $1"; }
 
 echo ""
 echo "============================================"
-echo "  NextNVR — IP Camera Recorder"
-echo "  One-Line Deployment"
+echo "  NextNVR — Portable Deployment"
+echo "  $(uname -m) / $(uname -s)"
 echo "============================================"
 echo ""
 
 # ── Check for sudo ──
 if ! command -v sudo &>/dev/null; then
-    err "sudo is required but not installed. Please install sudo first."
-    exit 1
+    if [ "$(id -u)" -eq 0 ]; then
+        # Running as root — create a no-op sudo.
+        sudo() { "$@"; }
+    else
+        err "sudo is required. Install it first or run as root."
+        exit 1
+    fi
 fi
 
+# ── 0. Detect distro & package manager ──
+detect_pkg_manager() {
+    if command -v apt-get &>/dev/null; then
+        PKG_INSTALL="sudo apt-get update -qq && sudo apt-get install -y -qq"
+        PKG_SEARCH="apt-cache search"
+        FFMPEG_PKG="ffmpeg"
+        GIT_PKG="git"
+        CURL_PKG="curl"
+        DISTRO="debian"
+    elif command -v dnf &>/dev/null; then
+        PKG_INSTALL="sudo dnf install -y -q"
+        PKG_SEARCH="dnf search"
+        FFMPEG_PKG="ffmpeg-free"
+        GIT_PKG="git"
+        CURL_PKG="curl"
+        DISTRO="fedora"
+    elif command -v yum &>/dev/null; then
+        PKG_INSTALL="sudo yum install -y -q"
+        PKG_SEARCH="yum search"
+        FFMPEG_PKG="ffmpeg"
+        GIT_PKG="git"
+        CURL_PKG="curl"
+        DISTRO="rhel"
+    elif command -v pacman &>/dev/null; then
+        PKG_INSTALL="sudo pacman -S --noconfirm --needed"
+        PKG_SEARCH="pacman -Ss"
+        FFMPEG_PKG="ffmpeg"
+        GIT_PKG="git"
+        CURL_PKG="curl"
+        DISTRO="arch"
+    elif command -v apk &>/dev/null; then
+        PKG_INSTALL="sudo apk add --no-cache"
+        PKG_SEARCH="apk search"
+        FFMPEG_PKG="ffmpeg"
+        GIT_PKG="git"
+        CURL_PKG="curl"
+        DISTRO="alpine"
+    else
+        err "Could not detect package manager. Supported: apt, dnf, yum, pacman, apk."
+        exit 1
+    fi
+    log "Detected: ${DISTRO} ($(echo ${PKG_INSTALL} | awk '{print $2}'))"
+}
+
+detect_pkg_manager
+
 # ── 1. Install system dependencies ──
 log "Step 1/6: Installing system dependencies..."
 
 if ! command -v ffmpeg &>/dev/null; then
-    info "Installing ffmpeg..."
-    sudo apt-get update -qq
-    sudo apt-get install -y -qq ffmpeg
+    info "Installing ffmpeg (${FFMPEG_PKG})..."
+    eval "${PKG_INSTALL} ${FFMPEG_PKG}"
     log "ffmpeg installed."
 else
     log "ffmpeg already installed: $(ffmpeg -version 2>&1 | head -1)"
 fi
 
-if ! command -v git &>/dev/null; then
-    info "Installing git..."
-    sudo apt-get install -y -qq git
-    log "git installed."
-fi
+for pkg in git curl; do
+    pkgvar="$(echo ${pkg} | tr '[:lower:]' '[:upper:]')_PKG"
+    if ! command -v ${pkg} &>/dev/null; then
+        info "Installing ${pkg}..."
+        eval "${PKG_INSTALL} ${!pkgvar}"
+    fi
+done
 
-if ! command -v curl &>/dev/null; then
-    sudo apt-get install -y -qq curl
-fi
-
-# ── 1b. Verify time synchronization (critical for NVR timestamps) ──
+# ── 1b. Time synchronization ──
 log "Checking time sync..."
-if systemctl is-active --quiet systemd-timesyncd 2>/dev/null; then
-    log "systemd-timesyncd is active."
-elif ! timedatectl status 2>/dev/null | grep -q "System clock synchronized: yes"; then
-    warn "Time sync is NOT active. Enabling systemd-timesyncd..."
-    sudo systemctl enable --now systemd-timesyncd 2>/dev/null || true
-    sudo timedatectl set-ntp true 2>/dev/null || true
-    log "Time sync enabled."
+
+# Try timedatectl (systemd). Fall back to checking ntp/chrony.
+TIME_SYNC_OK=false
+if command -v timedatectl &>/dev/null; then
+    if timedatectl status 2>/dev/null | grep -q "System clock synchronized: yes"; then
+        TIME_SYNC_OK=true
+    else
+        info "Enabling NTP via timedatectl..."
+        sudo timedatectl set-ntp true 2>/dev/null || true
+        TIME_SYNC_OK=true
+    fi
+elif systemctl is-active --quiet chronyd 2>/dev/null; then
+    TIME_SYNC_OK=true
+elif systemctl is-active --quiet ntpd 2>/dev/null; then
+    TIME_SYNC_OK=true
 else
-    log "Time sync is active."
+    warn "No time sync service detected. Trying to install chrony..."
+    eval "${PKG_INSTALL} chrony 2>/dev/null" || eval "${PKG_INSTALL} chronyd 2>/dev/null" || true
+    sudo systemctl enable --now chronyd 2>/dev/null || sudo systemctl enable --now chrony 2>/dev/null || true
+    TIME_SYNC_OK=true
 fi
 
-# Verify timezone is sensible.
-TZ=$(timedatectl show --property=Timezone --value 2>/dev/null || echo "unknown")
-log "Timezone: ${TZ}"
-log "Local time: $(date)"
+if $TIME_SYNC_OK; then
+    log "Time sync: OK"
+else
+    warn "Time sync could not be verified. Timestamps may drift."
+fi
 
-# ── 2. Install Go (user-local, no sudo needed after download) ──
+log "Local time: $(date)"
+TZ=$(timedatectl show --property=Timezone --value 2>/dev/null || cat /etc/timezone 2>/dev/null || echo "unknown")
+log "Timezone: ${TZ}"
+
+# ── 2. Install Go (portable — no distro packages) ──
 log "Step 2/6: Setting up Go ${GO_VERSION}..."
 
-GO_TAR="go${GO_VERSION}.${GO_OS}-${GO_ARCH}.tar.gz"
+GO_TAR="go${GO_VERSION}.linux-${GO_ARCH}.tar.gz"
 GO_URL="https://go.dev/dl/${GO_TAR}"
 GO_HOME="$HOME/.local/go"
 
 if [ -f "${GO_HOME}/bin/go" ]; then
-    CURRENT_GO=$(${GO_HOME}/bin/go version 2>/dev/null | grep -oP 'go\K[0-9.]+' || echo "0")
-    if [ "$CURRENT_GO" = "$GO_VERSION" ]; then
-        log "Go ${GO_VERSION} already installed."
-    else
-        warn "Go ${CURRENT_GO} found, upgrading to ${GO_VERSION}..."
-        rm -rf "${GO_HOME}"
-        curl -sSL "${GO_URL}" -o /tmp/${GO_TAR}
-        mkdir -p "${GO_HOME}"
-        tar -C "$HOME/.local" -xzf /tmp/${GO_TAR}
-        rm /tmp/${GO_TAR}
-        log "Go ${GO_VERSION} installed."
-    fi
+    log "Go already installed: $(${GO_HOME}/bin/go version)"
 else
-    info "Downloading Go ${GO_VERSION}..."
+    info "Downloading Go ${GO_VERSION} for linux/${GO_ARCH}..."
     curl -sSL "${GO_URL}" -o /tmp/${GO_TAR}
     mkdir -p "${GO_HOME}"
     tar -C "$HOME/.local" -xzf /tmp/${GO_TAR}
@@ -105,31 +163,31 @@ fi
 
 export PATH="${GO_HOME}/bin:$PATH"
 export GOPATH="$HOME/go"
+export GOCACHE="$HOME/.cache/go-build"
 
 # ── 3. Clone or update repository ──
 log "Step 3/6: Fetching NextNVR source..."
 
 if [ -d "${DEPLOY_DIR}/.git" ]; then
     info "Repository exists, pulling latest..."
-    cd "${DEPLOY_DIR}"
-    git pull origin main
+    git -C "${DEPLOY_DIR}" pull origin main
     log "Source updated."
 else
     info "Cloning repository..."
     sudo mkdir -p "${DEPLOY_DIR}"
-    sudo chown "$(whoami):$(whoami)" "${DEPLOY_DIR}"
+    sudo chown "$(whoami):$(id -gn)" "${DEPLOY_DIR}"
     git clone "${GIT_URL}" "${DEPLOY_DIR}"
-    cd "${DEPLOY_DIR}"
     log "Source cloned."
 fi
 
+cd "${DEPLOY_DIR}"
+
 # ── 4. Build ──
 log "Step 4/6: Building NextNVR binary..."
 
-cd "${DEPLOY_DIR}"
 go mod tidy
 
-VERSION=$(cat VERSION 2>/dev/null || echo "unknown")
+VERSION=$(cat VERSION 2>/dev/null || echo "0.0.0")
 BUILD_TIME=$(date -u +%Y-%m-%dT%H:%M:%SZ)
 
 CGO_ENABLED=0 go build \
@@ -139,26 +197,32 @@ CGO_ENABLED=0 go build \
 chmod +x nextnvr
 log "Binary built: nextnvr v${VERSION} ($(du -h nextnvr | cut -f1))"
 
-# ── 5. Create default config if missing ──
-log "Step 5/6: Checking configuration..."
+# ── 5. Configuration & directories ──
+log "Step 5/6: Configuration..."
 
 if [ ! -f "${DEPLOY_DIR}/config.yaml" ]; then
     cp config.yaml "${DEPLOY_DIR}/config.yaml"
-    log "Default config.yaml created. Edit it to add your cameras:"
-    info "  sudo nano ${DEPLOY_DIR}/config.yaml"
+    log "Default config.yaml created."
+    info "Edit it to match your cameras:  nano ${DEPLOY_DIR}/config.yaml"
 else
     log "config.yaml already exists — preserved."
 fi
 
-# Ensure recordings directory exists.
-sudo mkdir -p /mnt/recordings
-sudo chown "$(whoami):$(whoami)" /mnt/recordings 2>/dev/null || true
+sudo mkdir -p /mnt/recordings 2>/dev/null || mkdir -p /mnt/recordings
+sudo chown "$(whoami):$(id -gn)" /mnt/recordings 2>/dev/null || true
 
-# ── 6. Install systemd service ──
-log "Step 6/6: Installing systemd service..."
+# ── 6. Install service ──
+log "Step 6/6: Service installation..."
 
+RUN_USER="$(whoami)"
 SERVICE_FILE="/etc/systemd/system/${SERVICE_NAME}.service"
-sudo tee "${SERVICE_FILE}" > /dev/null <<EOF
+HAS_SYSTEMD=false
+if command -v systemctl &>/dev/null; then
+    HAS_SYSTEMD=true
+fi
+
+if $HAS_SYSTEMD; then
+    sudo tee "${SERVICE_FILE}" > /dev/null <<EOF
 [Unit]
 Description=NextNVR — IP Camera Recorder
 After=network.target
@@ -166,7 +230,7 @@ Wants=network.target
 
 [Service]
 Type=simple
-User=$(whoami)
+User=${RUN_USER}
 WorkingDirectory=${DEPLOY_DIR}
 ExecStart=${DEPLOY_DIR}/nextnvr --config ${DEPLOY_DIR}/config.yaml
 Restart=always
@@ -179,11 +243,31 @@ StandardError=journal
 WantedBy=multi-user.target
 EOF
 
-sudo systemctl daemon-reload
-sudo systemctl enable "${SERVICE_NAME}"
-sudo systemctl restart "${SERVICE_NAME}"
+    sudo systemctl daemon-reload
+    sudo systemctl enable "${SERVICE_NAME}"
+    sudo systemctl restart "${SERVICE_NAME}"
 
-sleep 2
+    sleep 2
+    echo ""
+    sudo systemctl status "${SERVICE_NAME}" --no-pager --lines=5 2>/dev/null || true
+else
+    warn "systemd not detected. Running NextNVR in background with nohup."
+
+    # Kill any existing instance.
+    pkill -f "nextnvr --config" 2>/dev/null || true
+    sleep 1
+
+    nohup "${DEPLOY_DIR}/nextnvr" --config "${DEPLOY_DIR}/config.yaml" \
+        > "${DEPLOY_DIR}/nextnvr.log" 2>&1 &
+
+    sleep 2
+    if pgrep -f "nextnvr --config" > /dev/null; then
+        log "NextNVR started (PID $(pgrep -f 'nextnvr --config' | head -1))."
+        info "Logs: tail -f ${DEPLOY_DIR}/nextnvr.log"
+    else
+        err "NextNVR failed to start. Check: ${DEPLOY_DIR}/nextnvr.log"
+    fi
+fi
 
 # ── Done ──
 echo ""
@@ -191,16 +275,19 @@ echo "============================================"
 echo -e "  ${GREEN}NextNVR deployment complete!${NC}"
 echo "============================================"
 echo ""
-info "  Web UI:   http://192.168.1.10:8080"
-info "  Config:   ${DEPLOY_DIR}/config.yaml"
-info "  Storage:  /mnt/recordings/"
+info "  Web UI:    http://$(hostname -I 2>/dev/null | awk '{print $1}' || echo 'localhost'):8080"
+info "  Config:    ${DEPLOY_DIR}/config.yaml"
+info "  Storage:   /mnt/recordings/"
 echo ""
-echo "  Service commands:"
-echo "    sudo systemctl status ${SERVICE_NAME}"
-echo "    sudo systemctl restart ${SERVICE_NAME}"
-echo "    sudo journalctl -u ${SERVICE_NAME} -f"
-echo ""
-
-# Show service status.
-sudo systemctl status "${SERVICE_NAME}" --no-pager --lines=5 2>/dev/null || true
+if $HAS_SYSTEMD; then
+    echo "  Service:"
+    echo "    sudo systemctl status ${SERVICE_NAME}"
+    echo "    sudo systemctl restart ${SERVICE_NAME}"
+    echo "    sudo journalctl -u ${SERVICE_NAME} -f"
+else
+    echo "  Process:"
+    echo "    ps aux | grep nextnvr"
+    echo "    tail -f ${DEPLOY_DIR}/nextnvr.log"
+    echo "  To stop:  pkill -f 'nextnvr --config'"
+fi
 echo ""