README documents a Docker build that cannot work because Dockerfile is absent

[gemshrine]

What is wrong?

The README tells users to run docker build -t swarm . and says a Dockerfile is required, but the repository has no Dockerfile (or .dockerignore). Following the documented command fails immediately with Docker's unable to prepare context: ... Dockerfile: no such file or directory error.

Where?

• README.md:82-83 (Docker build command)
• Repository root (missing Dockerfile)

Reproduction

1. Clone zerocracy/swarm-template at the default branch.
2. Run docker build -t swarm . as documented.
3. Docker fails before building any image because it cannot find a Dockerfile.

Expected behavior

The documented command should build the template image, or the README should not advertise a Docker build until a Dockerfile is included.

Suggested fix

Add and maintain a Dockerfile (and document its required runtime arguments), or remove/update the Docker build entry from the README.