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Sasanka Rath
Sasanka Rath

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Setting Up Nextcloud with Docker on an Old Laptop — Your Own Google Drive in 30 Minutes

#selfhosted #docker #nextcloud #tutorial

Part 2 of the home server series. A complete, step-by-step guide to installing Docker, running Nextcloud, setting up phone auto-backup, and getting desktop sync working."

In Part 1, I explained why I replaced Google One with a home server and showed the architecture. Now we build it.

This post covers the heart of the setup — Nextcloud running in Docker. By the end of this guide, you'll have a fully working personal cloud that you can access from your browser, sync files from your desktop, and auto-backup photos from your phone.

What you'll need:

  • An old laptop or PC (I'm using an HP Pavilion x360, but anything with 4GB+ RAM works)
  • Ubuntu Server 24.04 LTS installed (the official install guide takes about 15 minutes)
  • A wired or wireless internet connection
  • About 30 minutes

Let's go.

Step 1: Give your server a static IP

Before installing anything, your server needs a fixed IP address on your home network. Without this, your router might assign it a different IP every time it reboots, and nothing will be reachable.

Find your current network details:

ip a
ip route | grep default
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Note down your interface name (something like eth0 for Ethernet or wlo1 for WiFi), your current IP, and your gateway IP (usually 192.168.1.1).

Now edit the netplan config:

sudo nano /etc/netplan/00-installer-config.yaml
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For a wired connection (recommended — if your laptop doesn't have an Ethernet port, a USB-C to Ethernet adapter works great):

network:
  version: 2
  ethernets:
    eth0:
      dhcp4: no
      addresses:
        - 192.168.1.100/24
      routes:
        - to: default
          via: 192.168.1.1
      nameservers:
        addresses:
          - 1.1.1.1
          - 8.8.8.8
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For a WiFi connection:

network:
  version: 2
  wifis:
    wlo1:
      dhcp4: no
      addresses:
        - 192.168.1.100/24
      routes:
        - to: default
          via: 192.168.1.1
      nameservers:
        addresses:
          - 1.1.1.1
          - 8.8.8.8
      access-points:
        "Your_WiFi_Name":
          password: "your-wifi-password"
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Apply the config:

sudo netplan apply
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Verify it worked:

ip a | grep 192.168.1.100
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You should see your static IP. From now on, your server is always at 192.168.1.100 (or whatever IP you chose).

💡 Pick an IP outside your router's DHCP range. Most routers assign IPs in a range like 192.168.1.2 to 192.168.1.99. Setting your server to 192.168.1.100 avoids conflicts. Check your router's admin page if you're unsure.

Step 2: Install Docker

Docker lets you run Nextcloud in an isolated container — easy to install, easy to update, easy to back up.

# Update packages
sudo apt update && sudo apt upgrade -y

# Install Docker
sudo apt install docker.io docker-compose -y

# Start Docker and enable it on boot
sudo systemctl enable docker
sudo systemctl start docker

# Add your user to the docker group (so you don't need sudo every time)
sudo usermod -aG docker $USER
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Log out and log back in for the group change to take effect. Then verify Docker is running:

docker --version
docker compose version
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Both should return version numbers. If they do, Docker is ready.

Step 3: Prepare storage directories

Create the folders where Nextcloud will store your files. I use /srv/nas as the root — it's a standard Linux convention for service data.

💡 Running low on built-in storage? You can mount an external USB hard drive and point these directories to it. A 1TB external drive costs around ₹4,000 and instantly doubles your capacity.

# Create folder structure
sudo mkdir -p /srv/nas/photos
sudo mkdir -p /srv/nas/videos
sudo mkdir -p /srv/nas/documents
sudo mkdir -p /srv/nas/nextcloud

# Set ownership so Nextcloud (which runs as www-data) can write to it
sudo chown -R www-data:www-data /srv/nas
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This gives you a clean folder structure:

/srv/nas/
├── photos/       ← All your photos
├── videos/       ← Personal videos
├── documents/    ← PDFs, spreadsheets, etc.
└── nextcloud/    ← Nextcloud internal data
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Later, when we set up Samba (Part 3), these same folders will be accessible as network drives on your Mac or PC.

Step 4: Create the Docker Compose file

Create a directory for your server configuration and add the compose file:

mkdir -p ~/server
cd ~/server
nano docker-compose.yml
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Paste this:

version: '3'

services:
  nextcloud:
    image: nextcloud:latest
    container_name: nextcloud
    restart: always
    ports:
      - "8888:80"
    volumes:
      - ./config:/var/www/html
      - /srv/nas:/var/www/html/data
    environment:
      - NEXTCLOUD_TRUSTED_DOMAINS=192.168.1.100
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Let me explain what each line does:

  • image: nextcloud:latest — pulls the latest official Nextcloud image
  • container_name: nextcloud — gives the container a clean name
  • restart: always — auto-restarts the container if it crashes or after a reboot
  • ports: "8888:80" — maps port 8888 on your server to port 80 inside the container
  • volumes — mounts your config directory and storage directory into the container
  • NEXTCLOUD_TRUSTED_DOMAINS — tells Nextcloud which addresses are allowed to access it. We'll add more later (your domain, Tailscale IP, etc.)

💡 Why port 8888? Port 80 is reserved for potential future services. A non-standard port also adds a minor layer of obscurity. You can pick any unused port you like.

Step 5: Launch Nextcloud 

cd ~/server
docker compose up -d
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The -d flag runs it in the background. First time will take a minute or two to download the Nextcloud image.

Check it's running:

docker ps
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You should see:

CONTAINER ID   IMAGE              STATUS          PORTS                  NAMES
abc123def456   nextcloud:latest   Up 2 minutes    0.0.0.0:8888->80/tcp   nextcloud
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Now open a browser on any device on your home network and go to:

http://192.168.1.100:8888
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You'll see the Nextcloud setup screen.

Step 6: Configure Nextcloud

On the setup screen:

  1. Create an admin account — pick a username and a strong password. This is your main login.
  2. Storage & database — select SQLite for simplicity. It's perfectly fine for personal use with 1-3 users. (If you expect more users, you can set up MariaDB/PostgreSQL later.)
  3. Install recommended apps — check this box. It installs Calendar, Contacts, Talk, and other useful apps.

Click Finish setup. Give it a minute to install everything.

Once done, you'll land on the Nextcloud dashboard — your personal cloud is live.

Step 7: Update trusted domains

Nextcloud only allows access from domains/IPs listed in its trusted domains config. Right now it only knows about 192.168.1.100. We need to add more for later parts of this series.

# Enter the Nextcloud container
docker exec -it nextcloud bash

# Edit the config file
apt update && apt install nano -y
nano /var/www/html/config/config.php
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Find the trusted_domains section and update it:

'trusted_domains' =>
array (
  0 => '192.168.1.100',
  1 => 'files.yourdomain.com',
  2 => '100.x.x.x',
),
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Replace files.yourdomain.com with your actual domain (we'll set this up in Part 4), and 100.x.x.x with your Tailscale IP once you have it. For now, just add placeholder entries — you can always update later.

Save and exit (Ctrl+X, then Y, then Enter). Then exit the container:

exit
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Restart Nextcloud to apply:

docker restart nextcloud
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Step 8: Set up phone auto-backup

This is the killer feature — every photo you take automatically syncs to your server.

iPhone:

  1. Download Nextcloud from the App Store
  2. Open the app → enter server address: http://192.168.1.100:8888
  3. Log in with your admin credentials
  4. Go to Settings → Auto Upload
  5. Enable it and select which folders to back up (Camera Roll at minimum)

Android:

  1. Download Nextcloud from Play Store
  2. Same steps — enter server address, log in
  3. Go to Settings → Auto Upload
  4. Enable for Camera folder

From now on, every photo and video automatically uploads to /srv/nas/ on your server. No more paying Google for photo storage.

⚠️ This only works when you're on your home WiFi for now. In Part 4, when we set up Tailscale and the public domain, auto-backup will work from anywhere.

Step 9: Set up desktop sync

Mac:

  1. Download the Nextcloud desktop app from nextcloud.com/install
  2. Install and open it
  3. Server address: http://192.168.1.100:8888
  4. Log in with your credentials
  5. Choose a local sync folder on your Mac (e.g., ~/Nextcloud)
  6. Files now sync automatically — like Dropbox or OneDrive

Windows / Linux:

Same process — download the desktop client, point it to your server, and select a sync folder.

You can also access Nextcloud from any browser at http://192.168.1.100:8888 — upload files, create folders, share links, just like Google Drive.

Step 10: Useful Nextcloud commands

A few commands you'll use regularly:

# Check if Nextcloud is running
docker ps

# View Nextcloud logs (useful for debugging)
docker logs nextcloud --tail 50

# Restart Nextcloud
docker restart nextcloud

# Stop everything
cd ~/server && docker compose down

# Start everything
cd ~/server && docker compose up -d

# Force Nextcloud to re-scan files
# (useful after adding files via Samba — covered in Part 3)
docker exec -u www-data nextcloud php occ files:scan --all

# Check disk space
df -h
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Troubleshooting

Nextcloud not loading in browser?

  • Check the container is running: docker ps
  • If not running: cd ~/server && docker compose up -d
  • Check logs: docker logs nextcloud --tail 50

"Access through untrusted domain" error?

  • You're accessing from an IP/domain not in trusted_domains
  • Add it to the config as shown in Step 7

Upload fails for large files?

  • Nextcloud's default upload limit might be too low
  • Fix it: 
docker exec -it nextcloud bash
echo "upload_max_filesize=16G" > /usr/local/etc/php/conf.d/uploads.ini
echo "post_max_size=16G" >> /usr/local/etc/php/conf.d/uploads.ini
exit
docker restart nextcloud
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"Redirect loop" error?

  • Clear your browser cookies for 192.168.1.100
  • Make sure you're using http:// not https:// (we don't have SSL yet — that's Part 4)

What you should have now

After following this guide:

✅ Docker installed and running
✅ Nextcloud accessible at http://192.168.1.100:8888
✅ Storage organized in /srv/nas/ with separate folders for photos, videos, documents
✅ Phone auto-backup working on your home WiFi
✅ Desktop sync client connected
✅ Your own personal Google Drive — running on hardware you own

Hardware recommendations

You don't need to buy anything new to follow this guide — the whole point is using what you already have. But if you want to improve reliability or expand your setup, here's what I'd suggest:

Disclosure: These are affiliate links. If you purchase through them, I earn a small commission at no extra cost to you. I only recommend products I'd actually use.

What's next

📂 Part 3: Turn your server into a NAS with Samba — We'll make these same folders accessible directly in Mac Finder and Windows Explorer as network drives. This is the fastest way to transfer large files — drag and drop, just like a USB drive.

🌐 Part 4: Access your server from anywhere — Tailscale for private access, Oracle Free VPS + frp for public sharing, and SSL for your custom domain.

🔒 Part 5: Security hardening + lessons learned — UFW, Fail2Ban, SSH hardening, and everything I wish I'd known before starting.

All the config files from this series are available in the companion GitHub repo:
👉 github.com/sasrath/homecloud

Hit Follow if you don't want to miss Part 3. And if you run into any issues with the setup, drop a comment — I'll help you debug it.

Your Google Drive replacement is now running. Next up: making it work like a real NAS. 💾

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