# Secrets — prevent .env files from being baked into the image .env .env.enc .env.vault .env.vault.enc # Version control — .git is huge and not needed in image .git # Archives — not needed at runtime *.tar.gz # Prometheus data — large, ephemeral data prometheus-data/ # Compose files — only needed at runtime via volume mount docker-compose.yml # Project TOML files — gitignored anyway, won't be in build context projects/*.toml