Docker Basic Commands and Issue

Docker basic commands and issue

  • issue: Faied to connect to the Docker daemon
    Could you please try running

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    sudo su -
    service docker start
    docker images
    # See if that works. And if it does, please add your user to the
    # docker user group like this =>
    sudo usermod -aG docker <username>

  • docker export

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    $ docker export red_panda > latest.tar
    # Or
    $ docker export --output="latest.tar" red_panda

  • docker import

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    $ sudo tar -c . | docker import exampleimagedir

  • docker run imported images

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    $ docker run -d -p 9999:80 9d7081ecb8d0 service nginx start
    # host port : 9999
    # docker image post : 80
    # IMAGE ID : 9d7081ecb8d0

  • enter docker vm’s bash

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    $ docker exec -it 9d7081ecb8d0 bash
    # CONTAINER ID : 9d7081ecb8d0

  • show runing docker images

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    $ docker ps
    -------------------------------------------------------------------------------------------------------------------------------------------
    CONTAINER ID        IMAGE               COMMAND                 CREATED             STATUS              PORTS                  NAMES
    0696259e82a1        9d7081ecb8d0        "service nginx start"   4 minutes ago       Up 4 minutes        0.0.0.0:9999->80/tcp   admiring_jang
    -------------------------------------------------------------------------------------------------------------------------------------------

  • show images

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    $ docker images 
    -------------------------------------------------------------------------------------------------------------------------------------------
    REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
    <none>              <none>              9d7081ecb8d0        13 minutes ago      1.436 GB
    -------------------------------------------------------------------------------------------------------------------------------------------