How to Build a Private Cloud Storage with Nextcloud and Docker

After the recent news about the Pandownload developer being arrested, many users look for a reliable, self‑hosted cloud storage solution. The article introduces several open‑source private‑cloud options such as ownCloud, Nextcloud, Seafile, KodExplorer, and DzzOffice, and explains why Nextcloud was chosen (rich plugins, fewer bugs, open‑source, easy Docker deployment).

Setup Environment

CentOS 7 (commonly used on VPS providers like Vultr)

2 GB RAM, 2 Mbps bandwidth

Step 1: Install Docker

# 通过yum源安装docker
sudo yum -y install docker
# 启动docker
sudo systemctl start docker
# 开机自启
sudo systemctl enable docker

Step 2: Pull and run the Nextcloud image

docker run -d -p 8080:80 nextcloud

After the container starts, access YOUR_VPS_IP:8080 in a browser, create an admin account, and you have a functional Nextcloud instance.

Step 3: Access and use the cloud

From the web UI you can download clients for all platforms, upload files via drag‑and‑drop, and share links with others.

WebDAV configuration

Open the settings (gear icon) to obtain the WebDAV URL, then mount it on macOS or other clients. The article recommends the Transmit tool for stable WebDAV sync over unreliable networks.

Mobile access

Install the Nextcloud mobile app, log in with the admin credentials, and you can upload photos directly from the phone.

Optional: Install plugins

Click the gear icon in the top‑right corner of the Nextcloud UI to browse and install additional plugins that extend functionality.

Conclusion

Running your own private cloud protects personal data from being traded by large internet companies.

Nextcloud is free, open‑source, feature‑rich, and can be deployed with a single Docker command, making it ideal for hobbyists and small teams.