netslavegmbh/ckonto repository overview

⁠ckonto – IBAN validation and bank information (SEPA)

ckonto is a lightweight command-line tool for validating IBANs and retrieving SEPA-related bank information. It is designed for deterministic, stateless use in scripts, pipelines, and server environments.

This Docker image provides ckonto as a minimal, multi-architecture container (amd64 and arm64).

⁠Quick start

Validate an IBAN and retrieve all available information:

docker run --rm netslavegmbh/ckonto sepa -allinfo \
  "ibn=DE40100101780123456789"

Example output:

code=1&name=Revolut Bank, Zweigniederlassung Deutschland&zip=DE-10117&location=Berlin&bic=REVODEB2XXX&sct=1&sdd=1&b2b=1&scc=0&country=GERMANY&key=DEMO&mode=SEPA

⁠Usage

The container behaves exactly like the native ckonto binary. All command-line arguments are passed directly to the executable.

General form:

docker run --rm netslavegmbh/ckonto <command> [options] "<parameters>"

The container:

• runs as a non-root user
• is stateless
• does not write files
• produces output on STDOUT / STDERR only

⁠Image tags and update policy

⁠Versioning model

The version reported by the binary (cKonto -v) identifies the software interface and behavior, not the embedded bank data.

Docker images may be updated between scheduled quarterly releases to include updated bank data.

⁠Tag types

Immutable tags are never changed once published.

⁠Recommended usage

For most use cases, especially in production, we recommend using:

netslavegmbh/ckonto:latest

This ensures that IBAN validation is performed against the most up-to-date bank data.

If strict reproducibility is required, pin an immutable tag such as:

netslavegmbh/ckonto:3.26.1-r2

⁠Architecture support

This image is built and published for:

• linux/amd64
• linux/arm64

Docker will automatically pull the correct image for your platform.

⁠Security

• Minimal image based on scratch
• Runs as a non-root user
• No shell or package manager included
• Supply chain attestations and SBOM are provided

⁠Documentation and support

• Product documentation and downloads: https://www.ckonto.de/⁠
• For licensing and commercial support, please contact NetSlave GmbH.

⁠License

ckonto is a commercial product. Use of this Docker image is subject to the ckonto license terms.