These are Docker stack definitions in docker-compose format. Each represents a separate service running in Swarm.
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If this repo contains a custom image definition published to Docker hub, its stack definition is sym-linked to the docker-compose.yml file in the same directory as its Dockerfile
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Environment variables, labels and external secrets are local settings which are kept in a separate private git repo. They're each referenced explicitly in the environment section of each compose file, rather than by reference to a separate env_file, for clarity.
| Variable | Description |
|---|---|
| ADMIN_PATH | Directory (stored in git) containing admin settings |
| DB_HOST | Load-balanced hostname of primary MySQL database |
| REGISTRY_URI | Local docker registry hostname:port |
| SHARE_PATH | Directory pathname to synchronize across hosts |
With the rise in popularity of Kubernetes in 2018, usage of docker-compose file format is declining. I'm no longer using these files and there is no validation testing to confirm they still work.