docker Archives - Page 10 of 24

What is a dangling image and what is an unused image?

In the docker documentation of docker image prune it is possible to use the -a flag to Remove all unused images, not just ...

May 20, 2022
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How to define a variable in a Dockerfile?

In my Dockerfile, I would like to define variables that I can use later in the Dockerfile. I am aware of the ENV ...

May 20, 2022
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Docker: Add a restart policy to a container that was already created

I see that Docker has added something called restarting policies to handle restart of containers in case of, for instance, reboot. While this ...

May 20, 2022
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How to automatically update your docker containers, if base-images are updated

Say I have a trivial container based on the ubuntu:latest. Now there is a security update and ubuntu:latest is updated in the docker ...

May 20, 2022
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Docker is in volume in use, but there aren’t any Docker containers

EDIT (2/19/21): A lot of time has elapsed since I asked this original question years ago and I’ve seen a flurry of activity ...

May 19, 2022
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Mount current directory as a volume in Docker on Windows 10

Description I am using Docker version 1.12.5 on Windows 10 via Hyper-V and want to use container executables as commands in the current ...

May 19, 2022
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How do I mount a host directory as a volume in docker compose

I have a development environment I’m dockerizing and I would like the ability to livereload my changes without having to rebuild docker images. ...

May 19, 2022
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How can I delete Docker’s images?

I’ve the following images: alex@alexvps:~$ sudo docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE <none> <none> 70c0e19168cf 5 days ago 1.069 GB ...

May 19, 2022
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Is it ok to run docker from inside docker?

I’m running Jenkins inside a Docker container. I wonder if it’s ok for the Jenkins container to also be a Docker host? What ...

May 19, 2022
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Backup/Restore a dockerized PostgreSQL database

I’m trying to backup/restore a PostgreSQL database as is explained on the Docker website, but the data is not restored. The volumes used ...

May 18, 2022
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