- .dockerignore: exclude env + credential files (.npmrc, .netrc, .aws, .ssh,
secrets/, *.pem, *.key, *.p12, *.pfx, *.jks, id_rsa, id_ed25519, ...) from
the build context so a local secret file cannot be embedded in the image
- Dockerfile: document the T08 guarantee (no secret ARG/ENV, fixed non-secret
COPY paths, runtime credentials via Compose environment)
- compose.yaml: T08 in scope; runtime credentials stay in service environment,
never in the image
implementer