Supporting Guide

On-Premise Docker Containers: Private Barcode Rendering Without a Public Upload Flow

Containerized barcode rendering is useful when identifiers cannot leave a private network or when plants operate with intermittent connectivity. The real design question is not whether the image renderer fits in a container. It is how secrets, logs, upgrades, and temporary job data behave once the engine is inside the customer boundary.

docker run --rm -p 8080:8080 \
  -e BARCODE_API_MODE=offline \
  -e LOG_LEVEL=info \
  barcode-generators/engine:latest

• Bind secrets through approved secret stores, not hard-coded environment values in compose files.
• Document whether temporary objects are written to disk or kept in memory.
• Separate rendering workers from public ingress when multi-tenant policies matter.