Hunting Moby Dick: An Introduction to Docker

Hunting Moby Dick: An Introduction to Docker


Jaime Arias Almeida

December 13, 2017


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    Why Docker ◎ “Dockerized” apps are completely portable and can

    run anywhere. ◎ Developers can automate their build pipeline and share artifacts with Docker Hub. ◎ “Dockerized” apps are isolated from their surroundings. “W ” - M “I f USB ” - M “T f R 3.Y I R 3.X” - M 3
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    Ubuntu Installation Link: 1. Update the apt package index

    2. Install packages to allow apt to use a repository over HTTPS 10
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    Ubuntu Installation Link: 3. Add Docker’s official GPG key:

    4. Use the following command to set up the stable repository. 11
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    Ubuntu Installation Link: 1. Update the apt package index

    2. Install the latest version of Docker CE 3. Add your user to the docker group 12
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    Basic Commands docker COMMAND --help Print COMMAND usage. docker pull

    NAME[:TAG] Pull an image or a repository from Docker Hub to the machine. docker images Show all top level images, their repository and tags, and their size. docker rmi IMAGE Remove one or more images. 15
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    Basic Commands docker run --rm [OPTIONS] IMAGE [COMMAND] [ARGS] Run

    a COMMAND with specific ARGS in a new container. OPTIONS ◎ --detach, -d Run container in background and print container ID ◎ --env, -e Set environment variables ◎ --interactive, -i Keep STDIN open ◎ --name Assign a name to the container ◎ --publish, -p Publish a container’s port(s) to the host ◎ --rm Automatically remove the container when it exits ◎ --tty, -t Allocate a pseudo-TTY ◎ --volume, -v Bind mount a volume 17
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    Basic Commands docker exec CONTAINER Run a command in a

    running container. docker ps -a List the running containers. docker stop CONTAINER Stop one or more running containers. docker rm -f CONTAINER Remove one or more containers 23
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    Build & Publish Build 1. Create a Dockerfile (recipe) 2.

    Build an image from the Dockerfile in the current directory and tag it Publish 1. Retag a local image for a private registry 2. Log in to a registry (Docker Hub) 3. Push an image to the registry (upload) 28
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    Basic Commands docker build -t NAME[:TAG] PATH Build an image

    from a Dockerfile. docker login [SERVER] Log in to a Docker registry docker push NAME[:TAG] Push an image or a repository to a registry docker tag SOURCE TARGET Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE 29
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    Basic Commands docker save -o PATH IMAGE Save one or

    more images to a tar archive docker load -i PATH Load an image from a tar archive. 32
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    Credits Special thanks to all the people who made and

    released these awesome resources for free: ◎ Presentation template by SlidesCarnival ◎ Photographs by Unsplash 35