extremely slow pushes to local registry

[caarlos0]

Expected behavior

I'm running the registry as indicated in the documentation:

$ docker run -d -p 5000:5000 --restart always --name registry registry:2
Unable to find image 'registry:2' locally
2: Pulling from library/registry
ab7e51e37a18: Pull complete
c8ad8919ce25: Pull complete
5808405bc62f: Pull complete
f6000d7b276c: Pull complete
f792fdcd8ff6: Pull complete
Digest: sha256:9d295999d330eba2552f9c78c9f59828af5c9a9c15a3fbd1351df03eaad04c6a
Status: Downloaded newer image for registry:2
72a223c2c6710ef9ab014b2595d5c20a3867bb5577b79fa4a321bdbb637d461d

Pushing an image to the local registry should be fast.

Actual behavior

Pushing images, even very small images (like an scratch + text file or whatever), few Kb only, takes ages.

I tried to docker pull + docker tag + docker push the goreleaser/goreleaser image, which is ~8mb:

$ docker images -a
REPOSITORY                             TAG                 IMAGE ID            CREATED             SIZE
goreleaser/goreleaser                  latest              e4c02016aa2e        24 hours ago        8.03MB
localhost:5000/goreleaser/goreleaser   latest              e4c02016aa2e        24 hours ago        8.03MB
registry                               2                   177391bcf802        2 weeks ago         33.3MB

It took 4m11s to push the 8mb image:

$ docker push localhost:5000/goreleaser/goreleaser
The push refers to a repository [localhost:5000/goreleaser/goreleaser]
3e9ca8759232: Pushed
latest: digest: sha256:1848acb4c37bea4f38ffdf0f98b06f1b1e173d99aa21425874555dfff2067919 size: 528

Pulling the same image after took 1m:

$ docker pull localhost:5000/goreleaser/goreleaser
Using default tag: latest
latest: Pulling from goreleaser/goreleaser
Digest: sha256:1848acb4c37bea4f38ffdf0f98b06f1b1e173d99aa21425874555dfff2067919
Status: Image is up to date for localhost:5000/goreleaser/goreleaser:latest

Information

• Full output of the diagnostics from "Diagnose & Feedback" in the menu

Docker for Mac: version: 17.09.1-ce-mac42 (69202b202f497d4b6e627c3370781b9e4b51ec78)
macOS: version 10.13.2 (build: 17C88)
logs: /tmp/80AC17A8-A956-4043-829D-86C222427FCA/20171217-205554.tar.gz
[OK]     db.git
[OK]     vmnetd
[OK]     dns
[OK]     driver.amd64-linux
[OK]     virtualization VT-X
[OK]     app
[OK]     moby
[OK]     system
[OK]     moby-syslog
[OK]     db
[OK]     env
[OK]     virtualization kern.hv_support
[OK]     slirp
[OK]     osxfs
[OK]     moby-console
[OK]     logs
[OK]     docker-cli
[OK]     menubar
[OK]     disk

• A reproducible case if this is a bug, Dockerfiles FTW

$ docker run -d -p 5000:5000 --restart always --name registry registry:2
$ docker pull ubuntu
$ docker tag ubuntu localhost:5000/ubuntu
$ docker push localhost:5000/ubuntu

• Page URL if this is a docs issue or the name of a man page

Steps to reproduce the behavior

On a mac:

$ docker run -d -p 5000:5000 --restart always --name registry registry:2
$ docker pull ubuntu # could be any img actually
$ docker tag ubuntu localhost:5000/ubuntu
$ docker push localhost:5000/ubuntu

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[caarlos0]

/remove-lifecycle stale

[docker-robott]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale comment.
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/lifecycle stale

[foobarbecue]

/remove-lifecycle stale

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