Where is the Docker Store located on Ubuntu?

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Where is the Docker Store located on Ubuntu?

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#1 by (1 votes)

1

I'm studying docker, so this question I'm asking is a beginner.

Images are the files that contain the configuration of the machine you want to create.

Container is an instance of this image running and working.

The Docker Store is the record of the docker images. It would be the "Location" where the various images that will instanciate docker containers are stored.

So when you want to run a container, docker goes inside the Docker Store and looks for the requested container image.

I installed docker on my ubuntu machine. I can run the docker but I do not know where this image is coming from. I made the initial pull of the hello-world image. Downloaded but I do not know physically where that image is stored.

So where is it physically located (path) of the Docker Store by default? Or rather, what is the docker command to check where the Docker Store is from that installation?

docker ubuntu

asked by anonymous 03.08.2017 / 14:53

1 answer

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score 1 · Accepted Answer

First log in (example below my context, ubuntu too):

$ sudo docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't 
have a Docker ID, head over to https://hub.docker.com to create one. 
Username (user): user
Username (user): Digite a senha
Login Succeeded

After login you can use several commands, just do not know if it will help you a lot, the way docker build the artifacts is very complex, for example with the command docker info you will find that the docker root in Docker Root Dir: /var/lib/docker (in my context), from there you will find everything, images, containers, etc. Then you can check the system's competence with command tree /var/lib/docker , to be able to paste here I limit the tree to the depth of 3, see the result (partial).

$ sudo tree -L 3  /var/lib/docker/ 
/var/lib/docker/
├── aufs
│   ├── diff
│   │   ├── 109fcc3eb0ea93d2576fc5ed6fa5ae33d4dbfb344061a6802feecd022a3bb84b
│   │   ├── 178191e9492b90a31a3d13c07c39d3ab41a557379347730d857c3bc3fc735e36
│   │   ├── 178191e9492b90a31a3d13c07c39d3ab41a557379347730d857c3bc3fc735e36-init
│   │   ├── 189e7299d5f883444b91c9d020d231c1d1add078fb1f34b2d04d27ff9a7e8327
│   │   ├── 1d717521113b760e648f76cf347484958d3f5457a47336f87abaad858e7ba564
│   │   ├── 306ef406016a1078f4e45d2094d5099989194d65d6455ce39617b01ec04b96d2
│   │   ├── 36292f12e0b0a98d279f3fc55c68c23e98d065a1f67ba1c5819c1a9b2a29f8ec
│   │   ├── 382d434dd6da0a10364f310033f2b8c627fa9fa23e414fc510345f191de1a932
│   │   ├── 583fae26ed74e736c0cc84fb4dc6181b4994e6da9bf6b05068b00f7fd8d9ff52
│   │   ├── 5e50cb22c4f8edeba6a35bf60f8b2cf17181ff94fbb7864082001b5612186edf
│   │   ├── 7021ba5bc40a5bb5485eb3595babda1b32f5f314462276eb36f26f68abd479d2
│   │   ├── 7148b8e7abb56ecfd219ede7c2fda5d97d295ae2b917be07777150552f76fd48
│   │   ├── 79c5b73accaebb7d34ee7b09e8308a4113e750020454553dc1d40405818fb044
│   │   ├── 7a9079a68382a3a059d2e3c304f6c7bf78cdfa711e1ee797a1069c0916702a32
│   │   ├── 8932ee3cfac5c28298dbc898fc6772d6e9c761853385abb57fd06b991039d01a
│   │   ├── 90deda4aa2cb1a8267e2827a430db2537c47188b6b455e6ff3b977f1583ee398
│   │   ├── 9536443410f3f4bb4bbaaf9a884c04f3d6a72fb4245e24150fa1b11a3a1af691
│   │   ├── ade74ca2ab4aeb242524125bf94b9bb733c749f3e1674f4aee39c96987e1f10e
│   │   ├── c984433fe781e3e178f8c7c43a643b335b01cf68536c9382afd6a16fe0acbc3a
│   │   ├── d13d50ed234e25bfbe91e04d26cf983a9aa77cd3b3f35b254a906b29695833b7
│   │   └── ec9443cd7a3f822a0fbfb0424f5e219f75749af8d917cbfb012daa2aeca599b8
│   ├── layers
│   │   ├── 109fcc3eb0ea93d2576fc5ed6fa5ae33d4dbfb344061a6802feecd022a3bb84b
│   │   ├── 178191e9492b90a31a3d13c07c39d3ab41a557379347730d857c3bc3fc735e36
│   │   ├── 178191e9492b90a31a3d13c07c39d3ab41a557379347730d857c3bc3fc735e36-init
│   │   ├── 189e7299d5f883444b91c9d020d231c1d1add078fb1f34b2d04d27ff9a7e8327
│   │   ├── 1d717521113b760e648f76cf347484958d3f5457a47336f87abaad858e7ba564
│   │   ├── 306ef406016a1078f4e45d2094d5099989194d65d6455ce39617b01ec04b96d2
│   │   ├── 36292f12e0b0a98d279f3fc55c68c23e98d065a1f67ba1c5819c1a9b2a29f8ec
│   │   ├── 382d434dd6da0a10364f310033f2b8c627fa9fa23e414fc510345f191de1a932
│   │   ├── 583fae26ed74e736c0cc84fb4dc6181b4994e6da9bf6b05068b00f7fd8d9ff52
│   │   ├── 5e50cb22c4f8edeba6a35bf60f8b2cf17181ff94fbb7864082001b5612186edf
│   │   ├── 7021ba5bc40a5bb5485eb3595babda1b32f5f314462276eb36f26f68abd479d2
│   │   ├── 7148b8e7abb56ecfd219ede7c2fda5d97d295ae2b917be07777150552f76fd48
│   │   ├── 79c5b73accaebb7d34ee7b09e8308a4113e750020454553dc1d40405818fb044
│   │   ├── 7a9079a68382a3a059d2e3c304f6c7bf78cdfa711e1ee797a1069c0916702a32
│   │   ├── 8932ee3cfac5c28298dbc898fc6772d6e9c761853385abb57fd06b991039d01a
│   │   ├── 90deda4aa2cb1a8267e2827a430db2537c47188b6b455e6ff3b977f1583ee398
│   │   ├── 9536443410f3f4bb4bbaaf9a884c04f3d6a72fb4245e24150fa1b11a3a1af691
│   │   ├── ade74ca2ab4aeb242524125bf94b9bb733c749f3e1674f4aee39c96987e1f10e
│   │   ├── c984433fe781e3e178f8c7c43a643b335b01cf68536c9382afd6a16fe0acbc3a
│   │   ├── d13d50ed234e25bfbe91e04d26cf983a9aa77cd3b3f35b254a906b29695833b7
│   │   └── ec9443cd7a3f822a0fbfb0424f5e219f75749af8d917cbfb012daa2aeca599b8
│   └── mnt
│       ├── 109fcc3eb0ea93d2576fc5ed6fa5ae33d4dbfb344061a6802feecd022a3bb84b
│       ├── 178191e9492b90a31a3d13c07c39d3ab41a557379347730d857c3bc3fc735e36
│       ├── 178191e9492b90a31a3d13c07c39d3ab41a557379347730d857c3bc3fc735e36-init
│       ├── 189e7299d5f883444b91c9d020d231c1d1add078fb1f34b2d04d27ff9a7e8327
│       ├── 1d717521113b760e648f76cf347484958d3f5457a47336f87abaad858e7ba564
│       ├── 306ef406016a1078f4e45d2094d5099989194d65d6455ce39617b01ec04b96d2
│       ├── 36292f12e0b0a98d279f3fc55c68c23e98d065a1f67ba1c5819c1a9b2a29f8ec
│       ├── 382d434dd6da0a10364f310033f2b8c627fa9fa23e414fc510345f191de1a932
│       ├── 583fae26ed74e736c0cc84fb4dc6181b4994e6da9bf6b05068b00f7fd8d9ff52
│       ├── 5e50cb22c4f8edeba6a35bf60f8b2cf17181ff94fbb7864082001b5612186edf
│       ├── 7021ba5bc40a5bb5485eb3595babda1b32f5f314462276eb36f26f68abd479d2
│       ├── 7148b8e7abb56ecfd219ede7c2fda5d97d295ae2b917be07777150552f76fd48
│       ├── 79c5b73accaebb7d34ee7b09e8308a4113e750020454553dc1d40405818fb044
│       ├── 7a9079a68382a3a059d2e3c304f6c7bf78cdfa711e1ee797a1069c0916702a32
│       ├── 8932ee3cfac5c28298dbc898fc6772d6e9c761853385abb57fd06b991039d01a
│       ├── 90deda4aa2cb1a8267e2827a430db2537c47188b6b455e6ff3b977f1583ee398
│       ├── 9536443410f3f4bb4bbaaf9a884c04f3d6a72fb4245e24150fa1b11a3a1af691
│       ├── ade74ca2ab4aeb242524125bf94b9bb733c749f3e1674f4aee39c96987e1f10e
│       ├── c984433fe781e3e178f8c7c43a643b335b01cf68536c9382afd6a16fe0acbc3a
│       ├── d13d50ed234e25bfbe91e04d26cf983a9aa77cd3b3f35b254a906b29695833b7
│       └── ec9443cd7a3f822a0fbfb0424f5e219f75749af8d917cbfb012daa2aeca599b8
├── containers
│   └── 3c12fb559cc5a4191ceee4e0e7fe8b173cf67cddd18f36735ed4c3efe542e729
│       ├── 3c12fb559cc5a4191ceee4e0e7fe8b173cf67cddd18f36735ed4c3efe542e729-json.log
│       ├── checkpoints
│       ├── config.v2.json
│       ├── hostconfig.json
│       ├── hostname
│       ├── hosts
│       ├── resolv.conf
│       ├── resolv.conf.hash
│       └── shm
├── image
│   └── aufs
│       ├── distribution
│       ├── imagedb
│       ├── layerdb
│       └── repositories.json
├── network
│   └── files
│       └── local-kv.db
├── plugins
│   ├── storage
│   │   └── blobs
│   └── tmp
├── swarm
├── tmp
├── trust
└── volumes
    └── metadata.db

With the command sudo docker images , you can find that it has n images (2 in my context), SQN, with the command docker images -a you can find that it has n times (8 in my context) what appears without -a , is that, by default, the command does not list "intermediate" images.

$ sudo docker images 
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
skype               latest              fdbb095b559c        3 months ago        584MB
debian              stable              58cf158c4bd6        3 months ago        123MB

SQN

$ sudo docker images -a
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
skype               latest              fdbb095b559c        3 months ago        584MB
<none>              <none>              e8d86bada138        3 months ago        584MB
<none>              <none>              b9ccc42ebb18        3 months ago        584MB
<none>              <none>              e0d5c965fbb2        3 months ago        584MB
<none>              <none>              e7a97b82e06a        3 months ago        584MB
<none>              <none>              886fcead9731        3 months ago        584MB
<none>              <none>              25842c5c01f2        3 months ago        584MB
<none>              <none>              85254cda0f92        3 months ago        584MB
<none>              <none>              08e9b7c1a0df        3 months ago        584MB
<none>              <none>              fe9d47a01aff        3 months ago        584MB
<none>              <none>              cbfe10f545a1        3 months ago        584MB
<none>              <none>              944c17b0bc54        3 months ago        584MB
<none>              <none>              bda07b9cf4ca        3 months ago        584MB
<none>              <none>              dbf4386143ec        3 months ago        584MB
<none>              <none>              c3cf8fa7450a        3 months ago        584MB
<none>              <none>              bd374470d432        3 months ago        449MB
<none>              <none>              c7d7c7ec8796        3 months ago        396MB
<none>              <none>              d64937d09002        3 months ago        376MB
<none>              <none>              1d5c66ae3575        3 months ago        320MB
<none>              <none>              78c0a643553e        3 months ago        143MB
<none>              <none>              791c39f99208        3 months ago        123MB
<none>              <none>              77d09a74fa9e        3 months ago        123MB
<none>              <none>              4e4fc161ac04        3 months ago        123MB
debian              stable              58cf158c4bd6        3 months ago        123MB

Type $ docker --help to see the list of commands.