Implementation:Apache Kafka Docker Registry Push

Knowledge Sources	Apache Kafka
Domains	Release_Engineering, Containerization
Last Updated	2026-02-09 12:00 GMT

Overview

Concrete tool for pushing Docker images to a container registry provided by the Kafka docker_release module.

Description

The push to the container registry is integrated into the build_push function via the --push flag in the docker buildx build command. This flag instructs Buildx to push each platform-specific image and the multi-arch manifest to the configured registry immediately after building.

Usage

The push is automatic when using docker_release.py. Ensure docker login has been executed for the target registry before running.

Code Reference

Source Location

• Repository: Apache Kafka
• File: docker/docker_release.py
• Lines: L46

Signature

# Part of the buildx command in build_push():
docker buildx build \
  -f $DOCKER_FILE \
  --build-arg kafka_url={kafka_url} \
  --build-arg build_date={date} \
  --push \
  --platform linux/amd64,linux/arm64 \
  --tag {image} \
  $DOCKER_DIR

Import

# Prerequisite: docker login
docker login
# Then run docker_release.py

I/O Contract

Inputs

Name	Type	Required	Description
image	str	Yes	Target registry/image:tag (e.g., apache/kafka:3.7.0)
Docker credentials	config	Yes	Pre-configured via docker login

Outputs

Name	Type	Description
Pushed image	registry	Multi-arch image available at the specified tag

Usage Examples

# Login to Docker Hub
docker login

# Build and push release image
python docker/docker_release.py apache/kafka:3.7.0-rc0 \
  -u https://dist.apache.org/repos/dist/dev/kafka/3.7.0-rc0/kafka_2.13-3.7.0.tgz

Related Pages

Implements Principle

• Principle:Apache_Kafka_Container_Registry_Push
• Environment:Apache_Kafka_Docker_Build_Environment