| name | docker-patterns |
| description | Containerization rules for this repo — pinned base image, non-root user, read-only FS, explicit volumes for config and data. |
| metadata | {"origin":"adapted from ZMB-UZH/omero-docker-extended at 246110b1045cfd4ca318b4e870b5a38d213399b6; ECC v2.0.0 reviewed"} |
Docker Patterns
Use this skill whenever you touch Dockerfile, docker-compose.yml, .dockerignore, or any runtime-container entrypoint script.
Image baseline
- Pin Python to a specific minor version (
python:3.12-slim-bookworm). Never use :latest or a floating tag.
- The container runs a non-root user with UID/GID
10001. No apt or pip operations at runtime.
- The final image should have zero build tools. Install build deps in a throwaway stage if needed, copy only the wheel / site-packages forward.
- Declare
ENTRYPOINT ["simple-ai-trading"] so docker run image <cmd> works exactly like the local binary.
Compose baseline
- Service names are lowercase kebab-case.
- Each service sets
security_opt: no-new-privileges:true.
- Each service declares a
healthcheck when it has a reachable endpoint or a meaningful readiness probe.
- Env defaults live in Dockerfile
ARG or in .env.example, not inline in docker-compose.yml. Compose references ${VAR} with a default via ${VAR:-fallback} only when the fallback is safe for every environment.
- Config and data mount as named volumes or as bind mounts with explicit
ro / rw flags. Never mount / or $HOME.
What the simple-ai-trading container must not do
- Start a live loop by default. Default
CMD is shell (interactive) or menu, not live.
- Accept a
BINANCE_LIVE=1 style env that flips testnet=false. Live real-money mode must remain an explicit CLI flag combination with testnet=true, not a container-level setting.
- Bake credentials into the image. Secrets come from mounted
~/.config/simple_ai_trading/runtime.json (mode 0600) or from env vars at runtime.
Verification
docker build -t simple-ai-trading:dev .
docker run --rm simple-ai-trading:dev status
docker run --rm --entrypoint python simple-ai-trading:dev -m pytest -q
Any change to the runtime contract (entrypoint, user, volumes, healthcheck) is a change to operator expectations. Update the README and the .env.example in the same commit.
