The company behind Weave, a software project for networking Docker containers, has raised $5 million, a Series A round led by Accel Partners, just six months after its founding.

London-based Weaveworks, the startup behind Weave, was called Zettio back then. Weaveworks got immediate attention as it rode the feelgood vibes of Docker, which had just released its first production version in June. The first version of Weave was launched in September.

Weaveworks' founders are best known for RabbitMQ, a messaging startup they sold to VMware in 2010.

With Weave, the company was trying its hand at the networking of Docker containers, an area previously tapped by Rudder, which is a project driven by CoreOS, and Pipework, a project started by Docker Inc. programmer Jérôme Petazzoni.

Weave creates an overlay network that makes containers behave as if they were all connected to one switch. The application for this would be for Docker containers spread across multiple hosts.

That could be a big deal. Docker Inc. CEO Ben Golub has already noted, in a blog entry, that distributed applications are a focus for his company. The orchestration for those distributed containers will start getting fleshed out with announcements at this week's DockerCon in Amsterdam, he wrote.

What's Weaveworks going to do with its newfound cash? Get more people. When I talked to the company in mid-September, it consisted of just the two founders and a handful of engineers. Weaveworks also intends to build out a U.S. presence.