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ubuntu-post-install/services/nextcloud.sh
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Claude fa906186c3 fix(services): conditional caddy_net across all Docker service scripts 
Only include the caddy_net network block in generated docker-compose.yml
files when ~/docker/caddy exists. Prevents "network caddy_net declared
as external, but could not be found" on standalone installs without Caddy.

Affected: actualbudget, archivebox, arm, audiobookshelf, calibre-web,
changedetection, drum-rhythm-game, emby, fmd, frigate, frigate-audio,
frigate-notify, gatus, homeassistant, immich, iopaint, jellyfin, joplin,
koha, lyrion, magicmirror, mail-archiver, mattermost, mealie, meshcentral,
n8n, nextcloud, ntfy, onlyoffice, portainer, stirling-pdf, syncthing,
traccar, unifi, uptimekuma, vaultwarden, wg-easy

Skipped: authelia (creates caddy_net itself), caddy, crowdsec, wolf,
wolf-pair, and services using network_mode: host with no caddy_net.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01D8ckUJQtj1pH8jtAddBDZs
2026-06-20 04:16:41 +00:00

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#!/bin/bash
# services/nextcloud.sh — Self-hosted cloud storage with SMB/local file access (Nextcloud).
# Part of the modular post-install system (sourced by setup.sh).
#
# Can also be run standalone on any machine:
# sudo bash nextcloud.sh
# (Docker must already be installed when run standalone)
# ── Standalone bootstrap ──────────────────────────────────────────────────────
# Detected when the script is executed directly rather than sourced by setup.sh.
# Sets up helpers and globals, then defers execution until after the function
# definition at the bottom of this file.
if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
[[ "$(id -u)" == "0" ]] || { echo "Run with sudo: sudo bash $0"; exit 1; }
_SELF_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
_COMMON="$_SELF_DIR/../lib/common.sh"
if [[ -f "$_COMMON" ]]; then
# Full repo present — use the real helpers (picks up ~/docker/.config too)
# shellcheck source=../lib/common.sh
source "$_COMMON"
else
# One-off copy — inline minimal stubs so the script works without the repo
log_info() { echo -e "\033[0;34m[INFO]\033[0m $*"; }
log_success() { echo -e "\033[0;32m[OK]\033[0m $*"; }
log_warning() { echo -e "\033[1;33m[WARN]\033[0m $*"; }
log_error() { echo -e "\033[0;31m[ERROR]\033[0m $*" >&2; }
require_docker() {
command -v docker &>/dev/null || {
log_error "Docker not found. Install it first:"
log_error " curl -fsSL https://get.docker.com | sudo sh"
return 1
}
docker compose version &>/dev/null || {
log_error "Docker Compose plugin missing:"
log_error " sudo apt-get install -y docker-compose-plugin"
return 1
}
}
ensure_docker_dir_ownership() {
chown -R "$ACTUAL_USER:$ACTUAL_USER" "$@" 2>/dev/null || true
}
generate_password() {
local _len="${1:-32}"
tr -dc 'A-Za-z0-9' < /dev/urandom | head -c "$_len"
}
write_readme() {
local _dir="$1"; shift
[[ "${DRY_RUN:-false}" == "true" ]] && return 0
mkdir -p "$_dir"
cat > "$_dir/README.md"
}
# Match common.sh's eval-based pattern so local vars in install_* are set correctly
prompt_text() {
local _q="$1" _def="$2" _var="$3" _r
[[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
read -r -p " $_q " _r
eval "$_var='${_r:-$_def}'"
}
prompt_yn() {
local _q="$1" _def="$2" _var="$3" _r
[[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
read -r -p " $_q " _r
eval "$_var='${_r:-$_def}'"
}
configure_caddy_for_service() {
local _name="$1" _upstream="$2" _subdomain="$3" _extra="${4:-}"
local _caddy_dir="$DOCKER_DIR/caddy"
local _caddyfile="$_caddy_dir/Caddyfile"
# Support remote Caddy host via CADDY_REMOTE_HOST
if [[ -n "${CADDY_REMOTE_HOST:-}" ]]; then
log_info "Remote Caddy detected at $CADDY_REMOTE_HOST — printing block to add manually."
echo ""
echo " Add the following to your Caddyfile on $CADDY_REMOTE_HOST:"
echo " ──────────────────────────────────────────────────────────"
echo " # $_name"
echo " ${_subdomain}.${SITE_DOMAIN:-example.com} {"
echo " reverse_proxy $_upstream"
[[ -n "$_extra" ]] && echo "$_extra"
echo " }"
echo " ──────────────────────────────────────────────────────────"
return 0
fi
if [[ ! -d "$_caddy_dir" ]]; then
log_info "Access $_name directly on port ${_upstream##*:}."
return 0
fi
echo ""
local _do_caddy=""
read -r -p " Configure Caddy reverse proxy for $_name? [y/N]: " _do_caddy
[[ "${_do_caddy,,}" == "y" ]] || {
log_info "Skipping — access at: http://localhost:${_upstream##*:}"
return 0
}
local _domain=""
read -r -p " Domain (e.g. ${_subdomain}.${SITE_DOMAIN:-example.com}): " _domain
[[ -n "$_domain" ]] || { log_warning "No domain entered — skipping Caddy."; return 0; }
# Back up before touching
if [[ -f "$_caddyfile" ]]; then
local _bk="$_caddy_dir/Caddyfile.backup.$(date +%Y%m%d-%H%M%S)"
cp "$_caddyfile" "$_bk"
log_info "Backed up Caddyfile to $(basename "$_bk")"
else
touch "$_caddyfile"
fi
# Remove existing block for this domain if present
if grep -q "^${_domain}" "$_caddyfile" 2>/dev/null; then
log_warning "$_domain already in Caddyfile"
local _ow=""
read -r -p " Overwrite? [y/N]: " _ow
[[ "${_ow,,}" == "y" ]] || { log_info "Keeping existing entry."; return 0; }
sed -i "/^${_domain}/,/^}/d" "$_caddyfile"
fi
cat >> "$_caddyfile" << CBLOCK
# $_name
$_domain {
reverse_proxy $_upstream
header {
Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
X-Content-Type-Options "nosniff"
X-Frame-Options "SAMEORIGIN"
Referrer-Policy "strict-origin-when-cross-origin"
}
log {
output file /var/log/caddy/${_domain}.log
format json
}
${_extra}
}
CBLOCK
log_success "Added $_domain to Caddyfile"
docker exec caddy caddy fmt --overwrite /etc/caddy/Caddyfile 2>/dev/null || true
if docker exec caddy caddy reload --config /etc/caddy/Caddyfile 2>/dev/null; then
log_success "$_name accessible at: https://$_domain"
else
log_warning "Reload failed — check: docker logs caddy"
log_info "Manual reload: docker exec caddy caddy reload --config /etc/caddy/Caddyfile"
fi
}
fi
# Globals — ACTUAL_USER/ACTUAL_HOME must come before DOCKER_DIR
# ($HOME under sudo is /root, not the real user's home)
ACTUAL_USER="${ACTUAL_USER:-${SUDO_USER:-$USER}}"
ACTUAL_HOME="$(getent passwd "$ACTUAL_USER" 2>/dev/null | cut -d: -f6 || echo "${HOME:-/root}")"
DOCKER_DIR="${DOCKER_DIR:-$ACTUAL_HOME/docker}"
DRY_RUN="${DRY_RUN:-false}"
UNATTENDED="${UNATTENDED:-false}"
SITE_TZ="${SITE_TZ:-$(cat /etc/timezone 2>/dev/null || echo UTC)}"
SITE_DOMAIN="${SITE_DOMAIN:-example.com}"
SITE_CADDY_NET="${SITE_CADDY_NET:-caddy_net}"
register_service() { :; } # no-op — no wizard to register into
_RUN_STANDALONE=1
fi
# ─────────────────────────────────────────────────────────────────────────────
register_service nextcloud utilities "Self-hosted cloud storage with SMB/local file access (Nextcloud)" 8080
install_nextcloud() {
require_docker || return 1
log_info "Installing Nextcloud..."
local DIR="$DOCKER_DIR/nextcloud"
if [ "$DRY_RUN" = true ]; then
echo "[DRY-RUN] Would create $DIR with Dockerfile, docker-compose.yml, .env"
return 0
fi
mkdir -p "$DIR"
ensure_docker_dir_ownership "$DIR"
cd "$DIR" || return 1
local DB_PASS
DB_PASS=$(generate_password 32)
local NC_ADMIN_PASS
NC_ADMIN_PASS=$(generate_password 16)
local TZ_VAL="${SITE_TZ:-UTC}"
# ── Dockerfile ──────────────────────────────────────────────────────────
cat > Dockerfile << 'NCDF'
FROM nextcloud:apache
RUN apt-get update \
&& apt-get install -y --no-install-recommends procps smbclient \
&& rm -rf /var/lib/apt/lists/*
NCDF
local _CADDY_NET_BLOCK=""
if [ -d "$DOCKER_DIR/caddy" ]; then
_CADDY_NET_BLOCK=" networks:
- caddy_net
"
fi
local _CADDY_NET_SECTION=""
if [ -d "$DOCKER_DIR/caddy" ]; then
_CADDY_NET_SECTION="
networks:
caddy_net:
external: true
name: ${SITE_CADDY_NET:-caddy_net}
"
fi
# ── docker-compose.yml ──────────────────────────────────────────────────
cat > docker-compose.yml << NCCOMPOSE
name: nextcloud
services:
nextcloud:
build: .
container_name: nextcloud
hostname: nextcloud
restart: unless-stopped
env_file: .env
depends_on:
- db
volumes:
- ./html:/var/www/html
- ./config:/var/www/html/config
- ./custom_apps:/var/www/html/custom_apps
ports:
- "8080:80"
${_CADDY_NET_BLOCK}
db:
image: mariadb:10.11
container_name: nextcloud-db
hostname: nextcloud-db
restart: unless-stopped
env_file: .env
volumes:
- ./db:/var/lib/mysql
${_CADDY_NET_BLOCK}${_CADDY_NET_SECTION}
NCCOMPOSE
# ── .env ────────────────────────────────────────────────────────────────
cat > .env << NCENV
TZ=$TZ_VAL
CADDY_NET=$SITE_CADDY_NET
# MariaDB
MYSQL_ROOT_PASSWORD=$DB_PASS
MYSQL_DATABASE=nextcloud
MYSQL_USER=nextcloud
MYSQL_PASSWORD=$DB_PASS
MARIADB_AUTO_UPGRADE=1
# Nextcloud bootstrap (first run only)
NEXTCLOUD_ADMIN_USER=admin
NEXTCLOUD_ADMIN_PASSWORD=$NC_ADMIN_PASS
NEXTCLOUD_DB_TYPE=mysql
MYSQL_HOST=db
# Reverse proxy (required for correct share links and redirects behind Caddy)
OVERWRITEPROTOCOL=https
OVERWRITECLIURL=https://cloud.${SITE_DOMAIN:-example.com}
TRUSTED_PROXIES=172.16.0.0/12
NCENV
chmod 600 .env
# ── Subdirectories ──────────────────────────────────────────────────────
mkdir -p html config custom_apps db
chown -R "$ACTUAL_USER:$ACTUAL_USER" "$DIR"
echo ""
log_success "Nextcloud configured at $DIR"
configure_caddy_for_service "Nextcloud" "nextcloud:80" "cloud"
# ── Prompt to start ─────────────────────────────────────────────────────
local START_NC=""
prompt_yn "Start Nextcloud now? (y/n):" "y" START_NC
if [ "$START_NC" = "y" ] || [ "$START_NC" = "Y" ]; then
docker compose up -d --build \
&& log_success "Nextcloud started" \
|| { log_warning "Start failed — check: docker compose logs"; return 1; }
# ── Wait for occ and enable files_external ──────────────────────────
log_info "Waiting for Nextcloud to initialize (up to 90s)..."
local _wait=0
until docker exec nextcloud php occ status 2>/dev/null | grep -q "installed: true"; do
sleep 5; _wait=$((_wait+5))
[ $_wait -ge 90 ] && { log_warning "Nextcloud not ready after 90s — enable files_external manually"; break; }
done
if docker exec nextcloud php occ app:enable files_external 2>/dev/null; then
log_success "files_external app enabled (SMB/local external storage)"
fi
fi
# ── README ───────────────────────────────────────────────────────────────
write_readme "$DIR" << NCREADME
# Nextcloud
Self-hosted cloud storage with SMB/local file access.
## Access
- URL: https://cloud.${SITE_DOMAIN:-example.com} (or http://localhost:8080)
- Admin: admin
- Password: see \`NEXTCLOUD_ADMIN_PASSWORD\` in \`$DIR/.env\`
## Manage
\`\`\`bash
docker compose up -d --build # start / rebuild
docker compose down # stop
docker compose logs -f # follow logs
docker compose pull && docker compose up -d --build # update
\`\`\`
## Run occ commands
\`\`\`bash
docker exec -u www-data nextcloud php occ <command>
\`\`\`
## Enable external storage (SMB / local)
\`\`\`bash
docker exec -u www-data nextcloud php occ app:enable files_external
\`\`\`
Then configure mounts in Nextcloud → Settings → External Storages.
## Backup
Back up these directories:
- \`$DIR/html\` — Nextcloud application files
- \`$DIR/config\` — configuration
- \`$DIR/custom_apps\` — third-party apps
- \`$DIR/db\` — MariaDB data
- \`$DIR/.env\` — credentials (permissions 600)
NCREADME
echo ""
echo " Access URL: http://localhost:8080"
echo " Admin user: admin"
echo " Admin pass: $NC_ADMIN_PASS"
echo " Config dir: $DIR"
echo ""
echo " Note: First startup may take 1-2 minutes while Nextcloud initialises."
echo ""
}
# Run immediately when executed directly (deferred until after function definition)
[[ "${_RUN_STANDALONE:-0}" == 1 ]] && install_nextcloud
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