ejholmes / docker-slow

Documenting everything that's slow about docker push

Docker Slow!

This is a summary of everything that's slow about docker push.

1. Pull an image, then pushing it again results in all layers being pushed, including data.

Step 1 - Initial Build and Push

Start with a fresh Docker environment.

$ boot2docker delete && boot2docker init && boot2docker start

Build the image

$ docker build -t ejholmes/docker-slow .
Sending build context to Docker daemon 7.168 kB
Sending build context to Docker daemon
Step 0 : FROM ruby:2.2.2
2.2.2: Pulling from ruby
64e5325c0d9d: Pull complete
bf84c1d84a8f: Pull complete
87de57de6955: Pull complete
6a974bea7c0d: Pull complete
5a97b097c6e0: Pull complete
5f4f8ee0980f: Pull complete
48a45cf3c1b3: Pull complete
78e2011c894a: Pull complete
d45e4ad7ff24: Pull complete
ed3d295a9094: Pull complete
5df0b7777234: Pull complete
82bc5c9de744: Pull complete
22069f06dab4: Pull complete
c5623821e93c: Pull complete
42644941899f: Pull complete
a1ed99fd54db: Already exists
ruby:2.2.2: The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security.
Digest: sha256:0d74e28f091e14d88413db9bbeb476bf78585f7fef3a1b7e93589cf0e587ce3f
Status: Downloaded newer image for ruby:2.2.2
 ---> a1ed99fd54db
Step 1 : MAINTAINER Eric Holmes
 ---> Running in e384d8ec483f
 ---> 325a020a03fe
Removing intermediate container e384d8ec483f
Step 2 : RUN bundle config --global frozen 1
 ---> Running in 2cd39905b584
 ---> d7c381aacf5a
Removing intermediate container 2cd39905b584
Step 3 : RUN mkdir -p /home/app
 ---> Running in 00f089de5ec1
 ---> d89cf5d79288
Removing intermediate container 00f089de5ec1
Step 4 : WORKDIR /home/app
 ---> Running in 9bdbe201185d
 ---> f845e91cae5f
Removing intermediate container 9bdbe201185d
Step 5 : COPY Gemfile /home/app/
 ---> db610d02f72f
Removing intermediate container 2c9503b9eb48
Step 6 : COPY Gemfile.lock /home/app/
 ---> d826037ad53e
Removing intermediate container 0f2ed2dbfdce
Step 7 : RUN bundle install --jobs 4 --retry 3  --without development test unit features
 ---> Running in dce818e13b5c
Don't run Bundler as root. Bundler can ask for sudo if it is needed, and
installing your bundle as root will break this application for all non-root
users on this machine.
Using rake 10.4.2
Using bundler 1.10.5
Bundle complete! 1 Gemfile dependency, 2 gems now installed.
Gems in the groups development, test, unit and features were not installed.
Bundled gems are installed into /usr/local/bundle.
 ---> d875f4387b6a
Removing intermediate container dce818e13b5c
Step 8 : COPY . /home/app
 ---> 1868017f146d
Removing intermediate container 1c39a73c9a3a
Step 9 : CMD bundle exec rails console
 ---> Running in f62a9510b351
 ---> e1e8cd543876
Removing intermediate container f62a9510b351
Successfully built e1e8cd543876

Show the layers for the built image. Looks about right. Everything after 325a020a03fe should be cached by the Docker registry.

$ docker history ejholmes/docker-slow
IMAGE               CREATED             CREATED BY                                      SIZE
e1e8cd543876        5 minutes ago       /bin/sh -c #(nop) CMD ["bundle" "exec" "rails   0 B
1868017f146d        5 minutes ago       /bin/sh -c #(nop) COPY dir:a3c68abfd4a936a68e   693 B
d875f4387b6a        5 minutes ago       /bin/sh -c bundle install --jobs 4 --retry 3    887 B
d826037ad53e        5 minutes ago       /bin/sh -c #(nop) COPY file:0b6280704a6fc4d04   126 B
db610d02f72f        5 minutes ago       /bin/sh -c #(nop) COPY file:9e8416a559e63e8f2   42 B
f845e91cae5f        5 minutes ago       /bin/sh -c #(nop) WORKDIR /home/app             0 B
d89cf5d79288        5 minutes ago       /bin/sh -c mkdir -p /home/app                   0 B
d7c381aacf5a        5 minutes ago       /bin/sh -c bundle config --global frozen 1      92 B
325a020a03fe        5 minutes ago       /bin/sh -c #(nop) MAINTAINER Eric Holmes        0 B
a1ed99fd54db        8 days ago          /bin/sh -c #(nop) CMD ["irb"]                   0 B
42644941899f        8 days ago          /bin/sh -c #(nop) ENV BUNDLE_APP_CONFIG=/usr/   0 B
c5623821e93c        8 days ago          /bin/sh -c gem install bundler --version "$BU   1.125 MB
22069f06dab4        8 days ago          /bin/sh -c #(nop) ENV BUNDLER_VERSION=1.10.5    0 B
82bc5c9de744        8 days ago          /bin/sh -c #(nop) ENV PATH=/usr/local/bundle/   0 B
5df0b7777234        8 days ago          /bin/sh -c #(nop) ENV GEM_HOME=/usr/local/bun   0 B
ed3d295a9094        8 days ago          /bin/sh -c echo 'gem: --no-rdoc --no-ri' >> "   23 B
d45e4ad7ff24        8 days ago          /bin/sh -c apt-get update                       && apt-get install   98.72 MB
78e2011c894a        8 days ago          /bin/sh -c #(nop) ENV RUBY_DOWNLOAD_SHA256=5f   0 B
48a45cf3c1b3        8 days ago          /bin/sh -c #(nop) ENV RUBY_VERSION=2.2.2        0 B
5f4f8ee0980f        8 days ago          /bin/sh -c #(nop) ENV RUBY_MAJOR=2.2            0 B
5a97b097c6e0        9 days ago          /bin/sh -c apt-get update && apt-get install    312.3 MB
6a974bea7c0d        3 weeks ago         /bin/sh -c apt-get update && apt-get install    122.3 MB
87de57de6955        3 weeks ago         /bin/sh -c apt-get update && apt-get install    44.36 MB
bf84c1d84a8f        3 weeks ago         /bin/sh -c #(nop) CMD ["/bin/bash"]             0 B
64e5325c0d9d        3 weeks ago         /bin/sh -c #(nop) ADD file:085531d120d9b9b091   125.2 MB

Now let's push the image to the registry. Note that every layer is pushed (the output doesn't show it here, but the data for each layer was pushed as well), even the layers that we pulled from the registry. We would expect these layers to be cached and the CLI to reflect that.

$ docker push ejholmes/docker-slow
The push refers to a repository [ejholmes/docker-slow] (len: 1)
e1e8cd543876: Image already exists
1868017f146d: Image successfully pushed
d875f4387b6a: Image successfully pushed
d826037ad53e: Image successfully pushed
db610d02f72f: Image successfully pushed
f845e91cae5f: Image successfully pushed
d89cf5d79288: Image successfully pushed
d7c381aacf5a: Image successfully pushed
325a020a03fe: Image successfully pushed
a1ed99fd54db: Image successfully pushed
42644941899f: Image successfully pushed
c5623821e93c: Image successfully pushed
22069f06dab4: Image successfully pushed
82bc5c9de744: Image successfully pushed
5df0b7777234: Image successfully pushed
ed3d295a9094: Image successfully pushed
d45e4ad7ff24: Image successfully pushed
78e2011c894a: Image successfully pushed
48a45cf3c1b3: Image successfully pushed
5f4f8ee0980f: Image successfully pushed
5a97b097c6e0: Image successfully pushed
6a974bea7c0d: Image successfully pushed
87de57de6955: Image successfully pushed
bf84c1d84a8f: Image successfully pushed
64e5325c0d9d: Image successfully pushed
Digest: sha256:4a8a6fb67c01e065cdf6b29ab97e3862a255fb63e477f258695b49e4fb78a619

Step 2 - Pull the last image, build it again and push.

Start with a fresh Docker environment again.

$ boot2docker delete && boot2docker init && boot2docker start

Pull the last image from the repository.

$ docker pull ejholmes/docker-slow
latest: Pulling from ejholmes/docker-slow
64e5325c0d9d: Pull complete
bf84c1d84a8f: Pull complete
87de57de6955: Pull complete
6a974bea7c0d: Pull complete
5a97b097c6e0: Pull complete
5f4f8ee0980f: Pull complete
48a45cf3c1b3: Pull complete
78e2011c894a: Pull complete
d45e4ad7ff24: Pull complete
ed3d295a9094: Pull complete
5df0b7777234: Pull complete
82bc5c9de744: Pull complete
22069f06dab4: Pull complete
c5623821e93c: Pull complete
42644941899f: Pull complete
a1ed99fd54db: Pull complete
325a020a03fe: Pull complete
d7c381aacf5a: Pull complete
d89cf5d79288: Pull complete
f845e91cae5f: Pull complete
db610d02f72f: Pull complete
d826037ad53e: Pull complete
d875f4387b6a: Pull complete
1868017f146d: Pull complete
e1e8cd543876: Already exists
Digest: sha256:4a8a6fb67c01e065cdf6b29ab97e3862a255fb63e477f258695b49e4fb78a619
Status: Downloaded newer image for ejholmes/docker-slow:latest

We have the base image and the latest docker-slow image:

$ docker images
REPOSITORY             TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
ejholmes/docker-slow   latest              e1e8cd543876        15 minutes ago      704 MB

Show the layers for the pulled image. Everything matches what we built previously.

$ docker history ejholmes/docker-slow
IMAGE               CREATED             CREATED BY                                      SIZE
e1e8cd543876        16 minutes ago      /bin/sh -c #(nop) CMD ["bundle" "exec" "rails   0 B
1868017f146d        16 minutes ago      /bin/sh -c #(nop) COPY dir:a3c68abfd4a936a68e   693 B
d875f4387b6a        16 minutes ago      /bin/sh -c bundle install --jobs 4 --retry 3    887 B
d826037ad53e        16 minutes ago      /bin/sh -c #(nop) COPY file:0b6280704a6fc4d04   126 B
db610d02f72f        16 minutes ago      /bin/sh -c #(nop) COPY file:9e8416a559e63e8f2   42 B
f845e91cae5f        16 minutes ago      /bin/sh -c #(nop) WORKDIR /home/app             0 B
d89cf5d79288        16 minutes ago      /bin/sh -c mkdir -p /home/app                   0 B
d7c381aacf5a        16 minutes ago      /bin/sh -c bundle config --global frozen 1      92 B
325a020a03fe        16 minutes ago      /bin/sh -c #(nop) MAINTAINER Eric Holmes        0 B
a1ed99fd54db        8 days ago          /bin/sh -c #(nop) CMD ["irb"]                   0 B
42644941899f        8 days ago          /bin/sh -c #(nop) ENV BUNDLE_APP_CONFIG=/usr/   0 B
c5623821e93c        8 days ago          /bin/sh -c gem install bundler --version "$BU   1.125 MB
22069f06dab4        8 days ago          /bin/sh -c #(nop) ENV BUNDLER_VERSION=1.10.5    0 B
82bc5c9de744        8 days ago          /bin/sh -c #(nop) ENV PATH=/usr/local/bundle/   0 B
5df0b7777234        8 days ago          /bin/sh -c #(nop) ENV GEM_HOME=/usr/local/bun   0 B
ed3d295a9094        8 days ago          /bin/sh -c echo 'gem: --no-rdoc --no-ri' >> "   23 B
d45e4ad7ff24        8 days ago          /bin/sh -c apt-get update                       && apt-get install   98.72 MB
78e2011c894a        8 days ago          /bin/sh -c #(nop) ENV RUBY_DOWNLOAD_SHA256=5f   0 B
48a45cf3c1b3        8 days ago          /bin/sh -c #(nop) ENV RUBY_VERSION=2.2.2        0 B
5f4f8ee0980f        8 days ago          /bin/sh -c #(nop) ENV RUBY_MAJOR=2.2            0 B
5a97b097c6e0        9 days ago          /bin/sh -c apt-get update && apt-get install    312.3 MB
6a974bea7c0d        3 weeks ago         /bin/sh -c apt-get update && apt-get install    122.3 MB
87de57de6955        3 weeks ago         /bin/sh -c apt-get update && apt-get install    44.36 MB
bf84c1d84a8f        3 weeks ago         /bin/sh -c #(nop) CMD ["/bin/bash"]             0 B
64e5325c0d9d        3 weeks ago         /bin/sh -c #(nop) ADD file:085531d120d9b9b091   125.2 MB

Change a file and build a new image. This should invalidate the cache from 1868017f146d and up.

$ touch file && docker build -t ejholmes/docker-slow .
Sending build context to Docker daemon 97.28 kB
Sending build context to Docker daemon
Step 0 : FROM ruby:2.2.2
2.2.2: Pulling from ruby
64e5325c0d9d: Already exists
bf84c1d84a8f: Already exists
87de57de6955: Already exists
6a974bea7c0d: Already exists
5a97b097c6e0: Already exists
5f4f8ee0980f: Already exists
48a45cf3c1b3: Already exists
78e2011c894a: Already exists
d45e4ad7ff24: Already exists
ed3d295a9094: Already exists
5df0b7777234: Already exists
82bc5c9de744: Already exists
22069f06dab4: Already exists
c5623821e93c: Already exists
42644941899f: Already exists
a1ed99fd54db: Already exists
Digest: sha256:0d74e28f091e14d88413db9bbeb476bf78585f7fef3a1b7e93589cf0e587ce3f
Status: Image is up to date for ruby:2.2.2
 ---> a1ed99fd54db
Step 1 : MAINTAINER Eric Holmes
 ---> Using cache
 ---> 325a020a03fe
Step 2 : RUN bundle config --global frozen 1
 ---> Using cache
 ---> d7c381aacf5a
Step 3 : RUN mkdir -p /home/app
 ---> Using cache
 ---> d89cf5d79288
Step 4 : WORKDIR /home/app
 ---> Using cache
 ---> f845e91cae5f
Step 5 : COPY Gemfile /home/app/
 ---> Using cache
 ---> db610d02f72f
Step 6 : COPY Gemfile.lock /home/app/
 ---> Using cache
 ---> d826037ad53e
Step 7 : RUN bundle install --jobs 4 --retry 3  --without development test unit features
 ---> Using cache
 ---> d875f4387b6a
Step 8 : COPY . /home/app
 ---> 672ce035aa55
Removing intermediate container ee9b215c0644
Step 9 : CMD bundle exec rails console
 ---> Running in 6a2969e0d0e2
 ---> 11ea1aef2cf3
Removing intermediate container 6a2969e0d0e2
Successfully built 11ea1aef2cf3

Show the history for the new image. Top 2 layers were invalidated and built again like we expected.

$ docker history ejholmes/docker-slow
IMAGE               CREATED              CREATED BY                                      SIZE
11ea1aef2cf3        About a minute ago   /bin/sh -c #(nop) CMD ["bundle" "exec" "rails   0 B
672ce035aa55        About a minute ago   /bin/sh -c #(nop) COPY dir:f0612c8693cf4ec463   39.93 kB
d875f4387b6a        23 minutes ago       /bin/sh -c bundle install --jobs 4 --retry 3    887 B
d826037ad53e        23 minutes ago       /bin/sh -c #(nop) COPY file:0b6280704a6fc4d04   126 B
db610d02f72f        23 minutes ago       /bin/sh -c #(nop) COPY file:9e8416a559e63e8f2   42 B
f845e91cae5f        23 minutes ago       /bin/sh -c #(nop) WORKDIR /home/app             0 B
d89cf5d79288        23 minutes ago       /bin/sh -c mkdir -p /home/app                   0 B
d7c381aacf5a        23 minutes ago       /bin/sh -c bundle config --global frozen 1      92 B
325a020a03fe        23 minutes ago       /bin/sh -c #(nop) MAINTAINER Eric Holmes        0 B
a1ed99fd54db        8 days ago           /bin/sh -c #(nop) CMD ["irb"]                   0 B
42644941899f        8 days ago           /bin/sh -c #(nop) ENV BUNDLE_APP_CONFIG=/usr/   0 B
c5623821e93c        8 days ago           /bin/sh -c gem install bundler --version "$BU   1.125 MB
22069f06dab4        8 days ago           /bin/sh -c #(nop) ENV BUNDLER_VERSION=1.10.5    0 B
82bc5c9de744        8 days ago           /bin/sh -c #(nop) ENV PATH=/usr/local/bundle/   0 B
5df0b7777234        8 days ago           /bin/sh -c #(nop) ENV GEM_HOME=/usr/local/bun   0 B
ed3d295a9094        8 days ago           /bin/sh -c echo 'gem: --no-rdoc --no-ri' >> "   23 B
d45e4ad7ff24        8 days ago           /bin/sh -c apt-get update                       && apt-get install   98.72 MB
78e2011c894a        8 days ago           /bin/sh -c #(nop) ENV RUBY_DOWNLOAD_SHA256=5f   0 B
48a45cf3c1b3        8 days ago           /bin/sh -c #(nop) ENV RUBY_VERSION=2.2.2        0 B
5f4f8ee0980f        8 days ago           /bin/sh -c #(nop) ENV RUBY_MAJOR=2.2            0 B
5a97b097c6e0        9 days ago           /bin/sh -c apt-get update && apt-get install    312.3 MB
6a974bea7c0d        3 weeks ago          /bin/sh -c apt-get update && apt-get install    122.3 MB
87de57de6955        3 weeks ago          /bin/sh -c apt-get update && apt-get install    44.36 MB
bf84c1d84a8f        3 weeks ago          /bin/sh -c #(nop) CMD ["/bin/bash"]             0 B
64e5325c0d9d        3 weeks ago          /bin/sh -c #(nop) ADD file:085531d120d9b9b091   125.2 MB

Push the new image. Every...single..layer is pushed to the registry with data.

$ docker push ejholmes/docker-slow
The push refers to a repository [ejholmes/docker-slow] (len: 1)
11ea1aef2cf3: Image already exists
672ce035aa55: Image successfully pushed
d875f4387b6a: Image successfully pushed
d826037ad53e: Image successfully pushed
db610d02f72f: Image successfully pushed
f845e91cae5f: Image successfully pushed
d89cf5d79288: Image successfully pushed
d7c381aacf5a: Image successfully pushed
325a020a03fe: Image successfully pushed
a1ed99fd54db: Image successfully pushed
42644941899f: Image successfully pushed
c5623821e93c: Image successfully pushed
22069f06dab4: Image successfully pushed
82bc5c9de744: Image successfully pushed
5df0b7777234: Image successfully pushed
ed3d295a9094: Image successfully pushed
d45e4ad7ff24: Image successfully pushed
78e2011c894a: Image successfully pushed
48a45cf3c1b3: Image successfully pushed
5f4f8ee0980f: Image successfully pushed
5a97b097c6e0: Image successfully pushed
6a974bea7c0d: Image successfully pushed
87de57de6955: Image successfully pushed
bf84c1d84a8f: Image successfully pushed
64e5325c0d9d: Image successfully pushed
Digest: sha256:f69fb1678f436171a441db736b53a1640dfc276fa8e2f24d761de73ef4d236e4

Step 3 - Pulling, forcing a specific tag, then pushing all tags

$ docker pull ejholmes/docker-slow
$ docker tag ejholmes/docker-slow ejholmes/docker-slow:master
$ docker tag ejholmes/docker-slow ejholmes/docker-slow:$(git rev-parse HEAD)
$ docker images
REPOSITORY             TAG                                        IMAGE ID            CREATED             VIRTUAL SIZE
ejholmes/docker-slow   4d9820c7999742cedd46c233f58356510de1fc31   11ea1aef2cf3        4 hours ago         704 MB
ejholmes/docker-slow   latest                                     11ea1aef2cf3        4 hours ago         704 MB
ejholmes/docker-slow   master                                     11ea1aef2cf3        4 hours ago         704 MB

Now we'll push the repo, which will push all tags. Notice that this pushes each layer 3 times. It seems to only push the data once.

$ docker push ejholmes/docker-slow
The push refers to a repository [ejholmes/docker-slow] (len: 3)
11ea1aef2cf3: Image already exists
11ea1aef2cf3: Image already exists
11ea1aef2cf3: Image already exists
672ce035aa55: Image already exists
d875f4387b6a: Image already exists
d826037ad53e: Image already exists
db610d02f72f: Image already exists
f845e91cae5f: Image already exists
d89cf5d79288: Image already exists
d7c381aacf5a: Image already exists
325a020a03fe: Image already exists
a1ed99fd54db: Image already exists
42644941899f: Image already exists
c5623821e93c: Image already exists
22069f06dab4: Image already exists
82bc5c9de744: Image already exists
5df0b7777234: Image already exists
ed3d295a9094: Image already exists
d45e4ad7ff24: Image already exists
78e2011c894a: Image already exists
48a45cf3c1b3: Image already exists
5f4f8ee0980f: Image already exists
5a97b097c6e0: Image already exists
6a974bea7c0d: Image already exists
87de57de6955: Image already exists
bf84c1d84a8f: Image already exists
64e5325c0d9d: Image already exists
Digest: sha256:aeb48be11689c09b0d65d35254968fca052e1a51e66b943dd5ed6a2f9bb0888b

Now clean docker

$ boot2docker delete && boot2docker init && boot2docker start

Pull the master tag

$ docker pull ejholmes/docker-slow:master
master: Pulling from ejholmes/docker-slow
64e5325c0d9d: Pull complete
bf84c1d84a8f: Pull complete
87de57de6955: Pull complete
6a974bea7c0d: Pull complete
5a97b097c6e0: Pull complete
5f4f8ee0980f: Pull complete
48a45cf3c1b3: Pull complete
78e2011c894a: Pull complete
d45e4ad7ff24: Pull complete
ed3d295a9094: Pull complete
5df0b7777234: Pull complete
82bc5c9de744: Pull complete
22069f06dab4: Pull complete
c5623821e93c: Pull complete
42644941899f: Pull complete
a1ed99fd54db: Pull complete
325a020a03fe: Pull complete
d7c381aacf5a: Pull complete
d89cf5d79288: Pull complete
f845e91cae5f: Pull complete
db610d02f72f: Pull complete
d826037ad53e: Pull complete
d875f4387b6a: Pull complete
672ce035aa55: Pull complete
11ea1aef2cf3: Already exists
Digest: sha256:f52f8b866bfda756e4af0ffac334b1d6a5c36c39c243c9a373e7017280157a14
Status: Downloaded newer image for ejholmes/docker-slow:master

Show images

$ docker images
REPOSITORY             TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
ejholmes/docker-slow   master              11ea1aef2cf3        4 hours ago         704 MB

Build a new image

$ touch file && docker build -t ejholmes/docker-slow .
Sending build context to Docker daemon 125.4 kB
Sending build context to Docker daemon
Step 0 : FROM ruby:2.2.2
2.2.2: Pulling from ruby
64e5325c0d9d: Already exists
bf84c1d84a8f: Already exists
87de57de6955: Already exists
6a974bea7c0d: Already exists
5a97b097c6e0: Already exists
5f4f8ee0980f: Already exists
48a45cf3c1b3: Already exists
78e2011c894a: Already exists
d45e4ad7ff24: Already exists
ed3d295a9094: Already exists
5df0b7777234: Already exists
82bc5c9de744: Already exists
22069f06dab4: Already exists
c5623821e93c: Already exists
42644941899f: Already exists
a1ed99fd54db: Already exists
Digest: sha256:0d74e28f091e14d88413db9bbeb476bf78585f7fef3a1b7e93589cf0e587ce3f
Status: Image is up to date for ruby:2.2.2
 ---> a1ed99fd54db
Step 1 : MAINTAINER Eric Holmes
 ---> Using cache
 ---> 325a020a03fe
Step 2 : RUN bundle config --global frozen 1
 ---> Using cache
 ---> d7c381aacf5a
Step 3 : RUN mkdir -p /home/app
 ---> Using cache
 ---> d89cf5d79288
Step 4 : WORKDIR /home/app
 ---> Using cache
 ---> f845e91cae5f
Step 5 : COPY Gemfile /home/app/
 ---> Using cache
 ---> db610d02f72f
Step 6 : COPY Gemfile.lock /home/app/
 ---> Using cache
 ---> d826037ad53e
Step 7 : RUN bundle install --jobs 4 --retry 3  --without development test unit features
 ---> Using cache
 ---> d875f4387b6a
Step 8 : COPY . /home/app
 ---> 7c9374447d3e
Removing intermediate container 9ef4b2eb8154
Step 9 : CMD bundle exec rails console
 ---> Running in af4f2d09ebaa
 ---> 85dc11425f7b
Removing intermediate container af4f2d09ebaa
Successfully built 85dc11425f7b

Show images

$ docker images
REPOSITORY             TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
ejholmes/docker-slow   latest              85dc11425f7b        6 seconds ago       704 MB
ejholmes/docker-slow   master              11ea1aef2cf3        4 hours ago         704 MB
ruby                   2.2.2               a1ed99fd54db        9 days ago          704 MB

Show history for the new image

 docker history 85dc11425f7b
IMAGE               CREATED              CREATED BY                                      SIZE
85dc11425f7b        About a minute ago   /bin/sh -c #(nop) CMD ["bundle" "exec" "rails   0 B
7c9374447d3e        About a minute ago   /bin/sh -c #(nop) COPY dir:9dd43021d9cf96a60a   61.3 kB
d875f4387b6a        5 hours ago          /bin/sh -c bundle install --jobs 4 --retry 3    887 B
d826037ad53e        5 hours ago          /bin/sh -c #(nop) COPY file:0b6280704a6fc4d04   126 B
db610d02f72f        5 hours ago          /bin/sh -c #(nop) COPY file:9e8416a559e63e8f2   42 B
f845e91cae5f        5 hours ago          /bin/sh -c #(nop) WORKDIR /home/app             0 B
d89cf5d79288        5 hours ago          /bin/sh -c mkdir -p /home/app                   0 B
d7c381aacf5a        5 hours ago          /bin/sh -c bundle config --global frozen 1      92 B
325a020a03fe        5 hours ago          /bin/sh -c #(nop) MAINTAINER Eric Holmes        0 B
a1ed99fd54db        9 days ago           /bin/sh -c #(nop) CMD ["irb"]                   0 B
42644941899f        9 days ago           /bin/sh -c #(nop) ENV BUNDLE_APP_CONFIG=/usr/   0 B
c5623821e93c        9 days ago           /bin/sh -c gem install bundler --version "$BU   1.125 MB
22069f06dab4        9 days ago           /bin/sh -c #(nop) ENV BUNDLER_VERSION=1.10.5    0 B
82bc5c9de744        9 days ago           /bin/sh -c #(nop) ENV PATH=/usr/local/bundle/   0 B
5df0b7777234        9 days ago           /bin/sh -c #(nop) ENV GEM_HOME=/usr/local/bun   0 B
ed3d295a9094        9 days ago           /bin/sh -c echo 'gem: --no-rdoc --no-ri' >> "   23 B
d45e4ad7ff24        9 days ago           /bin/sh -c apt-get update                       && apt-get install   98.72 MB
78e2011c894a        9 days ago           /bin/sh -c #(nop) ENV RUBY_DOWNLOAD_SHA256=5f   0 B
48a45cf3c1b3        9 days ago           /bin/sh -c #(nop) ENV RUBY_VERSION=2.2.2        0 B
5f4f8ee0980f        9 days ago           /bin/sh -c #(nop) ENV RUBY_MAJOR=2.2            0 B
5a97b097c6e0        9 days ago           /bin/sh -c apt-get update && apt-get install    312.3 MB
6a974bea7c0d        3 weeks ago          /bin/sh -c apt-get update && apt-get install    122.3 MB
87de57de6955        3 weeks ago          /bin/sh -c apt-get update && apt-get install    44.36 MB
bf84c1d84a8f        3 weeks ago          /bin/sh -c #(nop) CMD ["/bin/bash"]             0 B
64e5325c0d9d        3 weeks ago          /bin/sh -c #(nop) ADD file:085531d120d9b9b091   125.2 MB

Tag the new image with the master tag.

$ docker tag -f ejholmes/docker-slow ejholmes/docker-slow:master
$ docker images
REPOSITORY             TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
ejholmes/docker-slow   latest              85dc11425f7b        2 minutes ago       704 MB
ejholmes/docker-slow   master              85dc11425f7b        2 minutes ago       704 MB
<none>                 <none>              11ea1aef2cf3        5 hours ago         704 MB
ruby                   2.2.2               a1ed99fd54db        9 days ago          704 MB

Push the new images.

$ docker push ejholmes/docker-slow
The push refers to a repository [ejholmes/docker-slow] (len: 2)
85dc11425f7b: Image already exists
85dc11425f7b: Image already exists
7c9374447d3e: Image already exists
d875f4387b6a: Image already exists
d826037ad53e: Image already exists
db610d02f72f: Image already exists
f845e91cae5f: Image already exists
d89cf5d79288: Image already exists
d7c381aacf5a: Image already exists
325a020a03fe: Image already exists
a1ed99fd54db: Image already exists
42644941899f: Image already exists
c5623821e93c: Image already exists
22069f06dab4: Image already exists
82bc5c9de744: Image already exists
5df0b7777234: Image already exists
ed3d295a9094: Image already exists
d45e4ad7ff24: Image already exists
78e2011c894a: Image already exists
48a45cf3c1b3: Image already exists
5f4f8ee0980f: Image already exists
5a97b097c6e0: Image already exists
6a974bea7c0d: Image already exists
87de57de6955: Image already exists
bf84c1d84a8f: Image already exists
64e5325c0d9d: Image already exists
Digest: sha256:721aa2901bea017182d14ad0d575e8b9670aa40656b221b3ab34274193da7af7

Clean Docker.

$ boot2docker delete && boot2docker init && boot2docker start

Pull master

$ docker pull ejholmes/docker-slow:master
master: Pulling from ejholmes/docker-slow
64e5325c0d9d: Pull complete
bf84c1d84a8f: Pull complete
87de57de6955: Pull complete
6a974bea7c0d: Pull complete
5a97b097c6e0: Pull complete
5f4f8ee0980f: Pull complete
48a45cf3c1b3: Pull complete
78e2011c894a: Pull complete
d45e4ad7ff24: Pull complete
ed3d295a9094: Pull complete
5df0b7777234: Pull complete
82bc5c9de744: Pull complete
22069f06dab4: Pull complete
c5623821e93c: Pull complete
42644941899f: Pull complete
a1ed99fd54db: Pull complete
325a020a03fe: Pull complete
d7c381aacf5a: Pull complete
d89cf5d79288: Pull complete
f845e91cae5f: Pull complete
db610d02f72f: Pull complete
d826037ad53e: Pull complete
d875f4387b6a: Pull complete
7c9374447d3e: Pull complete
85dc11425f7b: Already exists
Digest: sha256:721aa2901bea017182d14ad0d575e8b9670aa40656b221b3ab34274193da7af7
Status: Downloaded newer image for ejholmes/docker-slow:master