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A service migrated from regular replicas to a provider left its old containers standing: not converged (a provider service has no replicas to converge), not orphaned (the service is still in the model). The first up after the migration then failed creating the relay, because the leftover replica still held the service's canonical container name the relay takes over. And even without the name conflict (replicas 2..n of a scaled service), stale replicas kept the service's network alias, competing with the relay on DNS and serving outdated traffic. The reconciler now plans a stop+remove for every observed non-relay container of a provider service, and the RunProvider node depends on those removals: the canonical name is free by the time ensureServiceRelay creates the relay. The relay itself (RelayLabel) is the provider service's legitimate container and is left alone — converged by ensureServiceRelay, not by the plan. The e2e scenario migrates a deployed service to a provider and locks the replacement (Recreated, relay reachable at the compose-native address); the Scenario DSL gains FromFile — a local mirror of FromRemote — to switch the model between steps. Signed-off-by: Nicolas De Loof <nicolas.deloof@gmail.com> |
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| cmd | ||
| desktop-module | ||
| docs | ||
| internal | ||
| pkg | ||
| relay | ||
| .dockerignore | ||
| .gitattributes | ||
| .gitignore | ||
| .go-version | ||
| .golangci.yml | ||
| AGENTS.md | ||
| BUILDING.md | ||
| CLAUDE.md | ||
| codecov.yml | ||
| CONTRIBUTING.md | ||
| docker-bake.hcl | ||
| Dockerfile | ||
| go.mod | ||
| go.sum | ||
| LICENSE | ||
| logo.png | ||
| Makefile | ||
| NOTICE | ||
| README.md | ||
Table of Contents
Docker Compose
Docker Compose is a tool for running multi-container applications on Docker
defined using the Compose file format.
A Compose file is used to define how one or more containers that make up
your application are configured.
Once you have a Compose file, you can create and start your application with a
single command: docker compose up.
Note
Docker Swarm used to rely on the legacy compose file format but did not adopt the compose specification so is missing some of the recent enhancements in the compose syntax. After acquisition by Mirantis swarm isn't maintained by Docker Inc, and as such some Docker Compose features aren't accessible to swarm users.
Where to get Docker Compose
Windows and macOS
Docker Compose is included in Docker Desktop for Windows and macOS.
Linux
You can download Docker Compose binaries from the release page on this repository.
Rename the relevant binary for your OS to docker-compose and copy it to $HOME/.docker/cli-plugins
Or copy it into one of these folders to install it system-wide:
/usr/local/lib/docker/cli-pluginsOR/usr/local/libexec/docker/cli-plugins/usr/lib/docker/cli-pluginsOR/usr/libexec/docker/cli-plugins
(might require making the downloaded file executable with chmod +x)
Quick Start
Using Docker Compose is a three-step process:
- Define your app's environment with a
Dockerfileso it can be reproduced anywhere. - Define the services that make up your app in
compose.yamlso they can be run together in an isolated environment. - Lastly, run
docker compose upand Compose will start and run your entire app.
A Compose file looks like this:
services:
web:
build: .
ports:
- "5000:5000"
volumes:
- .:/code
redis:
image: redis
Contributing
Want to help develop Docker Compose? Check out our contributing documentation.
If you find an issue, please report it on the issue tracker.
Legacy
The Python version of Compose is available under the v1 branch.