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Protik Mondal
Protik Mondal

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Why I built a lightweight remote Docker dashboard with a 4MB outbound agent

#docker #devops #showdev

As developers and self-hosters, managing containers across multiple remote servers usually requires one of two compromises:

  1. Exposing your raw Docker socket (/var/run/docker.sock) directly to a third-party cloud service.
  2. Opening inbound firewall ports and configuring complex VPN tunnels (like Wireguard or Tailscale) just to access a self-hosted UI.

I wanted the convenience of a managed SaaS control plane to monitor all my remote hosts in one place, but without the security risks of exposing my Docker sockets to the cloud. So I built DockerDash (https://dockerdash.app) — a hybrid SaaS console paired with a tiny self-hosted agent.

How it Works: 3 Steps to Fleet Visibility

DockerDash splits the dashboard UI from the host data access:

  1. Create a Free Account: Sign up at dockerdash.app.
  2. Add your Host: Go to Connect Host in the dashboard and enter a friendly name.

  3. Run the Installer: Run our tiny 4 MB compiled agent on your Docker host with a single command:

    curl -fsSL https://dockerdash.app/install.sh | sudo bash

(If you are running the guided onboarding flow, the dashboard compiles a command pre-filled with a secure one-time enrollment token to link your host automatically.)

  • No Inbound Open Ports: The agent dials outbound to the DockerDash SaaS backend. You can keep all inbound firewall ports closed.
  • Low Footprint: Written in Go, the agent consumes < 12 MB of RAM (unlike Portainer's heavy container agents).
  • Read-Only / Observed Metrics: Keep container log streams and stats insulated from write-access API vulnerability exposures.

DockerDash vs Portainer: A Quick Look

While Portainer is a great heavyweight orchestrator for deploying stacks and managing networks, DockerDash is optimized specifically for low-overhead fleet monitoring:

  • RAM Footprint: Portainer requires ~150MB-300MB per node; DockerDash uses < 12MB.
  • Connection: Portainer requires inbound configurations or complex Agent setups; DockerDash is pure outbound systemd.
  • Hosting: Portainer must be self-hosted and maintained; DockerDash is a fully managed cloud dashboard.

If you run containers on one or more servers and want a secure, zero-maintenance dashboard, check it out at:
👉 dockerdash.app

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