Ports & browser access

Gantry makes a container's service one click away, whichever engine it runs on — on your Mac or out on the internet.

Local Docker

Published ports open directly on localhost. Use the open-in-browser button on a port in the container's Overview → Ports section, or the menu bar.

apple/container

Each container has a routable IP, so its ports are reachable directly at http://<ip>:<port> — no publishing required. The Address section shows the IP (and DNS name, if any) with one-click open chips. Gantry uses the IP for the primary open action because it always resolves; see Local DNS names to also reach it by name.

Docker over SSH

Remote ports aren't reachable from your Mac directly, so Gantry creates a local SSH port forward on demand and opens localhost:<local-port>. Active forwards are listed in the Ports section, where you can change the local port, copy the URL, or tear the forward down.

Share to the internet (Cloudflare Tunnel)

The cloud button on a published port exposes it to the internet over a Cloudflare Tunnel — no inbound ports opened on your network. Gantry installs cloudflared via Homebrew if it isn't already there, then offers two modes:

• Quick tunnel — no Cloudflare account; Cloudflare hands out a temporary https://<random>.trycloudflare.com address. Anyone with the link can reach the port while the tunnel is up.
• Named tunnel — route a hostname on a domain in your own Cloudflare account. A one-time cloudflared tunnel login (a button in the sheet) authorizes the zone; then enter the hostname and start.

The public URL appears under the port in the Ports section with open / copy / stop controls. Ports on SSH hosts are forwarded to your Mac first and then tunneled, and every tunnel is torn down automatically when you disconnect the host.