this post was submitted on 07 Sep 2023
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How do YOU create your Docker images? (lemmy.ml)
submitted 1 year ago by Dirk@lemmy.ml to c/selfhosted@lemmy.world
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Currently I’m planning to dockerize some web applications but I didn’t find a reasonably easy way do create the images to be hosted in my repository so I can pull them on my server.

What I currently have is:

  1. A local computer with a directory where the application that I want to dockerize is located
  2. A “docker server” running Portainer without shell/ssh access
  3. A place where I can upload/host the Docker images and where I can pull the images from on the “Docker server”
  4. Basic knowledge on how to write the needed Dockerfile

What I now need is a sane way to build the images WITHOUT setting up a fully featured Docker environment on the local computer.

Ideally something where I can build the images and upload them but without that something “littering Docker-related files all over my system”.

Something like a VM that resets on every start maybe? So … build the image, upload to repository, close the terminal window, and forget that anything ever happened.

What is YOUR solution to create and upload Docker images in a clean and sane way?

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[–] A10@kerala.party 1 points 1 year ago* (last edited 1 year ago) (1 children)

as a user with root permission or as root ?

[–] orizuru@lemmy.sdf.org 8 points 1 year ago* (last edited 1 year ago) (1 children)

You shouldn't need sudo to run docker, just can create a docker group and add your user to it. This will give you the steps on how to run docker without sudo.

Edit: as pointed out below, please make sure that you're comfortable with giving these permissions to the user you're adding to the docker group.

[–] vegetaaaaaaa@lemmy.world 3 points 1 year ago (1 children)

run docker without sudo.

Doing that, you effectively give the user account root access without password

docker run --volume /etc:/host_etc debian /bin/bash -> can read/write anything below the host's /etc directory, including shadow file, etc.

[–] orizuru@lemmy.sdf.org 2 points 1 year ago* (last edited 1 year ago)

True.

But I assume OP was already running docker from that user, so they are comfortable with those permissions.

Maybe should have made it clearer. Added to my other post. Thanks!