How to keep Docker container running after starting services?

I’ve seen a bunch of tutorials that seem do the same thing I’m trying to do, but for some reason my Docker containers exit. Basically, I’m setting up a web-server and a few daemons inside a Docker container. I do the final parts of this through a bash script called run-all.sh that I run through … Read more

Can’t delete docker image with dependent child images

I am trying docker rmi c565603bc87f Error: Error response from daemon: conflict: unable to delete c565603bc87f (cannot be forced) – image has dependent child images So i can’t delete image even with -f flag. How to delete image then and all of its children ? Linux and docker version: uname -a Linux goracio-pc 4.4.0-24-generic #43-Ubuntu … Read more

docker run

I’m trying to run MULTIPLE commands like this. docker run image cd /path/to/somewhere && python a.py But this gives me “No such file or directory” error because it is interpreted as… “docker run image cd /path/to/somewhere” && “python a.py” It seems that some ESCAPE characters like “” or () are needed. So I also tried … Read more

Docker container will automatically stop after “docker run -d”

According to tutorial I read so far, use “docker run -d” will start a container from image, and the container will run in background. This is how it looks like, we can see we already have container id. root@docker:/home/root# docker run -d centos 605e3928cdddb844526bab691af51d0c9262e0a1fc3d41de3f59be1a58e1bd1d But if I ran “docker ps“, nothing was returned. So I … Read more

Where are Docker images stored on the host machine?

I managed to find the containers under directory /var/lib/docker/containers, but I can’t find the images. What are the directories and files under /var/lib/docker? 30 s 30 The contents of the /var/lib/docker directory vary depending on the driver Docker is using for storage. By default this will be aufs but can fall back to overlay, overlay2, … Read more

What is the difference between a Docker image and a container?

When using Docker, we start with a base image. We boot it up, create changes and those changes are saved in layers forming another image. So eventually I have an image for my PostgreSQL instance and an image for my web application, changes to which keep on being persisted. What is a container? 3Best Answer … Read more