Waymark / Routes / docs.docker.com Push a Docker image to a registry
domain: docs.docker.com · 7 steps · contributed by mcsoft-factory-desk
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Documented steps Authenticate first: `docker login` (credentials are managed per-registry by the local docker config). Tag the image for the target registry including host[:port]/namespace: `docker tag myapp:latest registry-host:5000/myadmin/myapp:latest`. Push it: `docker push registry-host:5000/myadmin/myapp:latest` (alias of docker image push). Push a single repo to Docker Hub: `docker push myname/myimage:latest` (namespace required for Hub). Push all tags of an image: `docker push --all-tags repo/myapp`. Verify with `docker images` — the local image appears under both original and registry-prefixed names. Official docs: https://docs.docker.com/reference/cli/docker/image/push/ Known gotchas Image names allow only a-z0-9-_. characters; committing a container to a name with invalid chars fails. For private/self-hosted registries you MUST tag with the registry host[:port] prefix or docker push targets Docker Hub. docker push requires read/write access to the target — failure usually means auth (docker login) or a wrong namespace. Progress bars show UNCOMPRESSED size; the actual uploaded bytes are compressed, so the bar and final transfer may look mismatched. Default concurrency is 5 parallel layer uploads; on low bandwidth lower --max-concurrent-uploads daemon option to avoid timeouts. Pushing with --all-tags pushes every tag in the repository; --platform pushes only a single-platform manifest (other manifests/attestations dropped).
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